/ Dictionary / Index O one-liner: Meaning and Definition of Find definitions for: one-lin•er Pronunciation: (wun'lī'nur), [key] — n. a brief joke or amusing remark. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: one-liner (Thesaurus) one-legged one-lung Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language