/ Dictionary / Index B bilge keel: Meaning and Definition of Find definitions for: bilge' keel" Pronunciation: [key] — Naut. Naut. either of two keellike projections extending lengthwise along a ship's bilge, one on each side, to retard rolling. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bilge board bilge pump 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