| 单词 | bird's mouth |
| 释义 | > as lemmasbird's mouth bird's mouth n. Building and Joinery a triangular right-angled notch formed in the end of a timber (timber n.1 3a) to enable it to be securely fixed to a rectangular timber. ΘΚΠ the world > space > shape > angularity > [noun] > angle or corner > internal or pointing inward > cut out of a piece of timber bird's mouth1755 1755 J. Muller Treat. Pract. Part Fortification iii. xxi. 231 Their struts let into them with a small shoulder, commonly called by workmen, bird's mouth. 1823 P. Nicholson New Pract. Builder 191 Fitted..to its bearings, and to the newel, with a re-entrant angle, or bird's mouth. 1968 G. Slatter Pagan Game 17 The rafters that broke without warning, the birdmouths that would not fit on the top plate, the undulating soffits. 2021 Herald-Times (Bloomington, Indiana) 24 Feb. a4/4 Age-old construction techniques, like a ‘bird's mouth’ joint cut, securely..bind hefty beams. < as lemmas |
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