One of a pair of inclined rafters or beams, that meet at the top and are fixed at the bottom by a tie, and form the principal support of a roof; a…
| 单词 | θ159264 |
| 释义 | society > inhabiting and dwelling > inhabited place > a building > parts of building > framework of building > [noun] > roof-beam > rafter > principal (6) couple1364 One of a pair of inclined rafters or beams, that meet at the top and are fixed at the bottom by a tie, and form the principal support of a roof; a… principal1445 Building. A main rafter supporting purlins, which support the common rafters (also roof principal). Also: a main girder. Cf. sense A. 9. lever1481 Special applications. A roof-beam of naturally curved timber, forming one of the couples or principals supporting the roof (obsolete exc. dialect). coupling1577 A transverse timber connecting a pair of rafters. Obsolete. chevron1580 A beam, or rafter; esp. in plural the rafters or couples of the roof, which meet at an angle at the ridge. blade1855 Senses of doubtful origin. Architecture. |
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