单词	tail beam
释义	tail beam tail beam n. See tailpiece. tail beam tailpiece tailpiece, 1 1. A short beam, joist, or rafter, which is supported by a header joist at one end and a wall at the other; also called a tail beam or tail joist. 2. An extension to centering, where there is a projection from an impost; can be removed easily. 3. A lookout. 4. A pipe tee used with a sink drain. ThesaurusSeetailpiece
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