/ Dictionary / Index O one-piece: Meaning and Definition of Find definitions for: one-piece Pronunciation: (wun'pēs"), [key] — adj. complete in one piece, as a garment: a one-piece snowsuit. —n. Also calleda one-piece garment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: one-piece (Thesaurus) Oneonta one-point perspective Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language