ogam |ˈɑːɡəm| — Alternative spelling of ogham.

ogee |əʊˈdʒiː| — a molding that (in section) has the shape of an S with the convex part above and the concave part below

ogham |ˈɑːɡəm| — An ancient Celtic alphabet historically used to write Primitive Irish.

ogive |ˈəʊdʒaɪv| — front consisting of the conical head of a missile or rocket that protects the payload from heat during its passage through the atmosphere

ogle |ˈəʊɡl| — look at with amorous intentions

ogre |ˈəʊɡər| — a cruel wicked and inhuman person

ogress |ˈəʊɡres| — (folklore) a female ogre