/ Dictionary / Index P playpen: Meaning and Definition of Find definitions for: play•pen Pronunciation: (plā'pen"), [key] — n. a small enclosure, usually portable, in which a young child can play safely alone without constant supervision. playground (defs. 2, 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: playpen (Thesaurus) play on words playreader Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language