board foot(redirected from Superficial foot)
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n. pl. board feet Abbr. bd. ft. or BF
A unit of cubic measure for lumber, equal to one foot square by one inch thick.
(Units) a unit of board measure: the cubic content of a piece of wood one foot square and one inch thick
the basic unit of board measure, equal to the cubic contents of a piece of lumber one foot square and one inch thick. Abbr.: bd. ft.