Wiktionary
black olive
n. An olive picked after it has ripened; as opposed to a green olive which is picked before ripening.
WordNet
black olive
n. olives picked ripe and cured in brine then dried or pickled or preserved canned or in oil [syn: ripe olive]
Usage examples of "black olive".
On the fourth mount, riderless, a body was slung across the saddle, a body in the black olive drab of a marine.
I said, sipping coffee from one of her Emma Bridgewater fig leaf and black olive spongeware mugs.
The table was already set for three, with appetizers of crackers and black olive pate on hand.