DICT.TW Dictionary Taiwan

 butment
 基牙

 But·ment n.
 1. Arch. A buttress of an arch; the supporter, or that part which joins it to the upright pier.
 2. Masonry The mass of stone or solid work at the end of a bridge, by which the extreme arches are sustained, or by which the end of a bridge without arches is supported.
 Butment cheek Carp., the part of a mortised timber surrounding the mortise, and against which the shoulders of the tenon bear.
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