What is the meaning of Orca?

A sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale.

orca

orca, killer whale

cheek

calf

killer whale; orca

hulk (large ship used for transportation)

orc, orca (kind of whale)

butt, tun (large-bellied vessel)

orca (Orcinus orca)

orca, killer whale

Source: wiktionary.org