/ Dictionary / Index D drainfield: Meaning and Definition of Find definitions for: drain•field Pronunciation: (drān'fēld"), [key] — n. an open area, the soil of which absorbs the contents of a septic tank. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. drainboard drainless 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