/ Dictionary / Index P paper-train: Meaning and Definition of Find definitions for: pa•per-train Pronunciation: (pā'pur-trān"), [key] — v.t. to train (a pet) to defecate or urinate on sheets of disposable paper. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. paper trail paper wasp 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