/ Dictionary / Index W waste pipe: Meaning and Definition of Find definitions for: waste' pipe" Pronunciation: [key] a pipe for draining liquid waste or excess liquids. a pipe for draining away the wastes of a building other than those from water closets. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wastepaper waste product Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language