Breadcrumb Home > Dictionary > Index S soil pipe: Meaning and Definition of Find definitions for: soil' pipe" Pronunciation: [key] a pipe carrying wastes from toilets and sometimes from waste pipes. Cf.(def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. soil mechanics soil profile ✖ Related Content Daily Word Quiz: contretemps Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language