Nautical. The movable crosspiece of a cross-staff (cross-staff, n. 2). rare (now historical).
| 单词 | θ1410 |
| 释义 | the world > the universe > cosmology > science of observation > astronomical instruments > measuring altitude > [noun] > cross-staff > limb of (3) transitory?1574 Nautical. The movable crosspiece of a cross-staff (cross-staff, n. 2). rare (now historical). transom1594 In technical applications. The vane of a cross-staff (cross-staff, n. 2): see quot. 1696. Obsolete. transversary1595 A cross-piece or vane of a cross-staff. Historical. |
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