| 释义 |
ˈjack-staff Naut.
[f. jack n.3 + staff.]
1. A short staff, usually set upon the bowsprit or at the bow of a ship, on which the flag called the jack (jack n.3) is hoisted.
1692Capt. Smith's Seaman's Gram. i. xiv. 65 Jack staff and Jack. 1794Rigging & Seamanship I. 175 The Jack⁓staff is a short staff erected on the aftside of the bowsprit⁓cap, to expand the jack. 1880Preble Hist. of Flag (ed. 2) v. 509 The stars and stripes for the stern, the boat-flag for the jackstaff, and two blue flags for the wheel-houses.
2. Used (? erron.) for Jacob's staff (sense 2 a).
1891J. Winsor Columbus xi. 261 Whether the cross-staff or Jackstaff, a seaboard implement somewhat more convenient than the astrolabe, was known to Columbus is not very clear. |