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box sill

A type of sill, 1 used in frame construction; a header joist, nailed to the ends of the floor joists, rests on […]

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boxing

1. A box-like enclosure or recess at the side of a window frame that receives a boxing shutter when the shutter is

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bower

1. A rustic dwelling, generally of small scale and picturesque nature. 2. In a large  medieval residence, the private chamber of

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bow

1. The longitudinal curvature of a rod, bar, or piece of tubing or lumber. 2. A flexible rod for laying large curves

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bottom rail

1. The lowest horizontal structural member of the frame of a door or window that interconnects its vertical members. 2. The lower rail

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boss

1. A projecting, usually richly carved ornament placed at the   of ribs, groins, beams, etc., or at the termination of a

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bored lock

A lock intended for installation in a circular hole in a door.

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booster pump

An auxiliary pump which is used in a piping system to increase or maintain the pressure in the system.

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