/ Dictionary / Index P plaintiff: Meaning and Definition of Find definitions for: plain•tiff Pronunciation: (plān'tif), [key] — n. Law. a person who brings suit in a court (opposed to defendant). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: plaintiff (Thesaurus) plaintext plaintive Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language