board foot definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a unit of linear measure of lumber, equal to a board one foot square and one inch thick
board foot definition by American Heritage Dictionary
noun pl. board feet board feet Abbr. bd. ft. or BF
A unit of cubic measure for lumber, equal to one foot square by one inch thick.