A black and white predatory whale (Orcinus orca) that feeds on large fish, squid, and sometimes dolphins and seals. Also called orca.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "killer whale" in a sentence
"A four-foot bat with eight spider's legs flapped and chittered madly around the ceiling, and a huge bipedal killer whale slowly moved closer to the gel man."