bar mat
A network of steel reinforcing bars assembled in two or more layers and welded or tied together.
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General
barn-door hanger
A hanger for an exterior sliding door; consists of a frame which moves along a horizontal track, supported by rollers.
General
barn-door stay
A small wheel which rolls along a horizontal track and guides the movement of a barn door.
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barn raising
In the United States before the 20th century, a cooperative effort in which the elements of the framework for a
General
barium plaster
A special mill-mixed gypsum plaster containing barium salts; used to plaster walls of x-ray rooms.