/ Dictionary / Index P prankster: Meaning and Definition of Find definitions for: prank•ster Pronunciation: (prangk'stur), [key] — n. a mischievous or malicious person who plays tricks, practical jokes, etc., at the expense of another. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prankster (Thesaurus) prankish prao Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language