/ Dictionary / Index K killer whale: Meaning and Definition of Find definitions for: kill'er whale' Pronunciation: [key] any of several predatory dolphins, esp. the black-and-white Orcinus orca, found in all seas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. killer T cell killick Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language