/ Dictionary / Index B board foot: Meaning and Definition of Find definitions for: board' foot" Pronunciation: [key] — Building Trades. Building Trades. a unit of measure equal to the cubic contents of a piece of lumber one foot square and one inch thick, used in measuring logs and lumber. Abbr.: bd. ft. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. boarder baby board game Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language