| 单词 | sunk coak |
| 释义 | > as lemmassunk coak sunk coak n. Woodworking and Shipbuilding (now historical and rare) a groove or cavity in the face of one of two scarfed timbers, into which the coak of the other is fitted to form a joint; see scarf v.2 1a, coak n. 2.Now usually referred to by the more general term mortise (mortise n. 2). ΚΠ 1821 J. Fincham Introd. Outl. Pract. Ship-Building 10 The raised coak is upon the lip..or thin part of the scarph, and the sunk coak taken out to correspond in the thick part. 1869 R. W. Meade Treat. Naval Archit. & Ship-building (ed. 2) 302 A mortise, or sunk coak, is a hollow cut in a piece of timber to fit a tenon or a raised coak on another piece. 1940 Chambers's Techn. Dict. 821/1 Sunk-coak, the mortise-like recess in one of the mating surfaces of a scarfed joint, into which the coak..fits. < as lemmas |
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