/ Dictionary / Index P pickproof: Meaning and Definition of Find definitions for: pick•proof Pronunciation: (pik'prf"), [key] — adj. (of a lock) designed so that it cannot be picked. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pickpocket pickthank Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language