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A black-and-white toothed whale (Orcinus orca) that feeds on large fish, squid, and marine mammals such as seals and other whales and dolphins. Also called killer whale.
[Latin ōrca, whale, probably alteration (probably influenced by ōrca, vessel) of Greek orux, orug-, pickaxe, a kind of large fish or whale, perhaps from orussein, to dig.]
n, pl orcas or orca
1. (Animals) a killer whale
a large, predatory, black-and-white dolphin, Orcinus orca.
A large dolphin found in all the world's oceans, having a black body with a white underside and a tall, triangular dorsal fin. Orcas grow up to 30 feet (9.1 meters) in length. Also called killer whale.
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|Noun||1.||orca - predatory black-and-white toothed whale with large dorsal fin; common in cold seas|
dolphin - any of various small toothed whales with a beaklike snout; larger than porpoises