jab |dʒæb| — a sharp hand gesture (resembling a blow)

jabber |ˈdʒæbər| — rapid and indistinct speech

jabot |ˈʒæbəʊ| — a ruffle on the front of a woman's blouse or a man's shirt

jacinth |ˈdʒæˌsɪnθ| — a red transparent variety of zircon used as a gemstone

jack |dʒæk| — a small worthless amount

jack up |ˈjakˌəp| — lift with a special device

Jack-a-dandy |ˌdʒækəˈdændɪ| — (archaic) A little dandy; a little foppish impertinent fellow.

jack-in-the-box |ˈdʒæk ɪn ðə bɑːks| — plaything consisting of a toy clown that jumps out of a box when the lid is opened

jack-knife |ˈdʒæk naɪf| — A compact folding knife.

jack-o'-lantern |ˈjakəˌlan(t)ərn| — a pale light sometimes seen at night over marshy ground

jack-plane |ˈdʒæk pleɪn| — A general-purpose bench plane, used for general sizing of wood and for smoothing or straightening edges.

jack-staff |ˈdʒækstɑːf| — Alternative spelling of jackstaff.

jackal |ˈdʒækl| — Old World nocturnal canine mammal closely related to the dog; smaller than a wolf; sometimes hunts in a pack but usually singly or as a member of a pair

jackanapes |ˈdʒækəneɪps| — someone who is unimportant but cheeky and presumptuous

jackaroo |ˌdʒækəˈruː| — (Australia) A trainee station manager or owner, working as a stockman or farm hand; formerly, a young man of independent means working at a station in a supernumerary capacity to gain experience.

jackass |ˈdʒækæs| — a man who is a stupid incompetent fool

jackboot |ˈdʒækbuːt| — (19th century) a man's high tasseled boot

jackdaw |ˈdʒækdɔː| — common black-and-grey Eurasian bird noted for thievery

jacket |ˈdʒækɪt| — a short coat

jacketed |ˈdʒækətəd| — Encased or enclosed inside a jacket.

jackknife |ˈdʒæknaɪf| — a large knife with one or more folding blades

jackplane  — Alternative spelling of jack plane.

jackpot |ˈdʒækpɑːt| — the cumulative amount involved in a game (such as poker)

jackscrew  — screw-operated jack

jacksnipe  — a small short-billed Old World snipe

jackstone  — A jack; one of the playing pieces in the game of jacks.

jackstones  — game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks

jackstraw |ˈdʒakstrɔː| — a thin strip of wood used in playing the game of jackstraws

Jacobean |ˌdʒækəˈbiːən| — any distinguished personage during the reign of James I

jacobin |ˈjakəbən| — a member of the radical movement that instituted the Reign of Terror during the French Revolution

Jacobinic |ˌdʒækəʊˈbɪnɪk| — of or relating to the Jacobins of the French Revolution

Jacobinical |ˌdʒækəʊˈbɪnɪkəl| — of or relating to the Jacobins of the French Revolution

Jacobite |ˈdʒækəbaɪt| — a supporter of James II after he was overthrown or a supporter of the Stuarts

jacobus |dʒəˈkɒbəs| — A former English gold coin from the Jacobite period.

jaconet |ˈjakəˌnet| — a lightweight cotton cloth with a smooth and slightly stiff finish; used for clothing and bandages

jacqueminot |ˈdʒækmɪnəʊ| — A variety of deep crimson rose.

jacquerie |ˌʒækʌˈriː| — A violent revolt by peasants.

jactation |dʒækˈteɪʃən| — (pathology) extremely restless tossing and twitching usually by a person with a severe illness

jactitation |dʒæktɪˈteɪʃən| — speaking of yourself in superlatives

jacuzzi |dʒəˈkuːzɪ| — A hot tub with underwater jets that massage the body.

jade |dʒeɪd| — a semiprecious gemstone that takes a high polish; is usually green but sometimes whitish; consists of jadeite or nephrite

jaded |ˈdʒeɪdɪd| — exhausted

Jaeger |ˈjeɡər| — rapacious seabird that pursues weaker birds to make them drop their prey

jag |dʒæɡ| — a sharp projection on an edge or surface

jagged |ˈdʒæɡɪd| — having a sharply uneven surface or outline

jaggery |ˈdʒæɡərɪ| — unrefined brown sugar made from palm sap

jaggy |ˈdʒæɡɪ| — having an irregularly notched or toothed margin as though gnawed

jaguar |ˈdʒæɡjʊər| — a large spotted feline of tropical America similar to the leopard; in some classifications considered a member of the genus Felis

jail |dʒeɪl| — a correctional institution used to detain persons who are in the lawful custody of the government (either accused persons awaiting trial or convicted persons serving a sentence)

jail-fever |ˈdʒeɪlˌfiːvə| — typhus

jailbird |ˈdʒeɪlbɜːrd| — a criminal who has been jailed repeatedly

jailbreak |ˈdʒeɪlbreɪk| — an escape from jail

jailed |ˈdʒeɪld| — being in captivity

jailer |ˈdʒeɪlər| — someone who guards prisoners

jailor |ˈdʒeɪlər| — someone who guards prisoners

Jain |dʒeɪn| — relating to or characteristic of Jainism

jake |ˈdʒeɪk| — (slang) Adequate; satisfactory; acceptable.

jalap |ˈdʒælʌp| — A cathartic drug consisting of the tuberous roots of Ipomoea purga, a convolvulaceous plant found in Mexico.

jalopy |dʒəˈlɑːpɪ| — a car that is old and unreliable

jalousie |ˈdʒælʌˌsiː| — a window with glass louvers

jam |dʒæm| — preserve of crushed fruit

jam-jar |ˈdʒæmdʒɑː| — A glass container for jam.

jama |ˈdʒæmə| — Journal of the American Medical Association

Jamaica |dʒəˈmeɪkə| — a country on the island of Jamaica; became independent of England in 1962; much poverty; the major industry is tourism

Jamaican |dʒəˈmeɪkən| — a native or inhabitant of Jamaica

jamb |dʒæm| — upright consisting of a vertical side member of a door or window frame

jambalaya |ˌdʒæmbəˈlaɪə| — spicy Creole dish of rice and ham, sausage, chicken, or shellfish with tomatoes, peppers, onions, and celery

jambeau |ˈʒambəʊ| — armor plate that protects legs below the knee

jamboree |ˌdʒæmbəˈriː| — a gay festivity

jammer |ˈdʒæmər| — a transmitter used to broadcast electronic jamming

jamming |ˈdʒæmɪŋ| — deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems

jams |ˈdʒæmz| — plural form of jam

Jane |ˈdʒeɪn| — 1590, Edmund Spenser, The Faerie Queene, III.vii:

jangle |ˈdʒæŋɡl| — a metallic sound

janissary |ˈdʒænɪsərɪ| — a loyal supporter

janitor |ˈdʒænɪtər| — someone employed to clean and maintain a building

janizary |ˈdʒænɪzəriː| — Alternative spelling of janissary.

Jansenism |ˈjansəˌnɪzəm| — the Roman Catholic doctrine of Cornelis Jansen and his disciples; salvation is limited to those who are subject to supernatural determinism and the rest are assigned to perdition

January |ˈdʒænjʊerɪ| — the first month of the year; begins 10 days after the winter solstice

Janus |ˈdʒeɪnəs| — (Roman mythology) the Roman god of doorways and passages; is depicted with two faces on opposite sides of his head

Jap |dʒæp| — (offensive slang) offensive term for a person of Japanese descent

japan |dʒəˈpæn| — a string of more than 3,000 islands to the east of Asia extending 1,300 miles between the Sea of Japan and the western Pacific Ocean

Japanese |ˌdʒæpəˈniːz| — a native or inhabitant of Japan

jape |dʒeɪp| — a humorous anecdote or remark intended to provoke laughter

Japhetic |dʒəˈfetɪk| — (obsolete, ethnography) Of or pertaining to the supposed descendants of Japheth, one of the three sons of Noah in the Bible.

japonic |dʒəˈpɒnɪk| — A language family spoken in Japan, consisting of Japanese proper and the Ryukyuan languages.

jar |dʒɑːr| — a vessel (usually cylindrical) with a wide mouth and without handles

jardiniere |ˌdʒɑːrˈdniːr| — A plantstand or flowerpot, especially one made of decorated pottery or porcelain.

jargon |ˈdʒɑːrɡən| — a characteristic language of a particular group (as among thieves)

jargonelle |dʒɑːrɡəˈnel| — A variety of pear.

jargonize |ˈdʒɑːrɡəˌnaɪz| — (intransitive) To speak or write using jargon.

jarhead |ˈdʒɑːrhed| — (slang) A US marine.

jarring |ˈdʒɑːrɪŋ| — making or causing a harsh and irritating sound

jasmin |ˈdʒæzˌmɪn| — A female given name, a variant of Jasmine.

jasmine |ˈdʒæzmɪn| — any of several shrubs and vines of the genus Jasminum chiefly native to Asia

jasper |ˈjaspər| — an opaque form of quartz; red or yellow or brown or dark green in color; used for ornamentation or as a gemstone

jaundice |ˈdʒɔːndɪs| — yellowing of the skin and the whites of the eyes caused by an accumulation of bile pigment (bilirubin) in the blood; can be a symptom of gallstones or liver infection or anemia

jaundiced |ˈdʒɔːndɪst| — affected by jaundice which causes yellowing of skin etc

jaunt |dʒɔːnt| — a journey taken for pleasure

jauntily |ˈdʒɒntəlɪ| — in a jaunty fashionable manner

jaunting-car |ˈdʒɔːrntɪŋ kɑːrr| — A kind of low-set horse-drawn open vehicle, used in Ireland, in which the passengers ride sidewise, sitting back to back.

jaunty |ˈdʒɔːntɪ| — marked by up-to-dateness in dress and manners

Javanese |ˌdʒɑːvəˈniːz| — a native or inhabitant of Java

javelin |ˈdʒævlɪn| — an athletic competition in which a javelin is thrown as far as possible

jaw |dʒɔː| — the part of the skull of a vertebrate that frames the mouth and holds the teeth

jawbone |ˈdʒɔːbəʊn| — the jaw in vertebrates that is hinged to open the mouth

jawbreaker |ˈdʒɔːbreɪkər| — a large round hard candy

jaws |ˈdʒɒz| — plural form of jaw

jay |dʒeɪ| — United States diplomat and jurist who negotiated peace treaties with Britain and served as the first chief justice of the United States Supreme Court (1745-1829)

jaywalk |ˈdʒeɪwɔːk| — cross the road at a red light

jaywalker |ˈdʒeɪwɔːrkər| — a reckless pedestrian who crosses a street illegally

jazz |dʒæz| — empty rhetoric or insincere or exaggerated talk

jazz up |ˈdʒæz ʌp| — make more interesting or lively

jazz-band  — (music) A musical band that plays jazz music.

jazzy |ˈdʒæzɪ| — resembling jazz (especially in its rhythm)