Chiefly Nautical. A hand-held instrument for telling the time at night from the position of certain stars relative to the celestial pole, esp. the…
| 单词 | θ1413 |
| 释义 | the world > the universe > cosmology > science of observation > astronomical instruments > measuring altitude > [noun] > at night (2) nocturnal1582 Chiefly Nautical. A hand-held instrument for telling the time at night from the position of certain stars relative to the celestial pole, esp. the… nocturlabe1594 = nocturnal, n. 1. |
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