| 释义 |
▪ I. pitch-board1
[f. pitch n.2 VI + board n.]
A thin wooden board used as a guide in stair-building, cut to the shape of a right-angled triangle, with the base equal to the breadth of tread of the step, and the perpendicular equal to its height, the hypotenuse thus indicating the pitch.
1778Encycl. Brit. (ed. 2) I. 618/1 Plate xxxviii..Fig. 2. Exhibits the pitch-board, to shew what part of the step the twisted part of the rail contains. 1825J. Nicholson Operat. Mechanic 600 The pitch-board, is a right-angled triangular board made to the rise and tread of the step, one side forming the right angle of the width of the tread.
▪ II. † ˈpitch-board2 Obs. rare—1.
[f. pitch n.1 + board n.]
? A fanciful name for a ship. (Cf. board n. 13.)
1599Nashe Lenten Stuffe 29 To post after him, and scoure it with their Ethiope pitchbordes till they be windlesse in his quest and pursuing. |