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 &omacron;rca, whale, probably alteration (probably influenced by &omacron;rca, vessel) of Greek orux, orug-, pickax, a kind of large fish or whale, perhaps from orussein, to dig.
From Latin orca (“whale").