/ Dictionary / Index S sand pile: Meaning and Definition of Find definitions for: sand' pile" Pronunciation: [key] — Building Trades. Building Trades. a base for a footing in soft soil, made by compacting sand in a cavity left by a wooden pile. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sandpile (Thesaurus) sand pike sandpiper Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language