Origin of orcaL: see orc
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.
Origin of orcaLatin ōrca, whale, probably alteration (probably influenced by ōrca, vessel) of Greek orux, orug-, pickax, a kind of large fish or whale, perhaps from orussein, to dig.
From Latin orca (“whale").