Chiefly Astronomy and Nautical. An instrument formerly used for taking the altitude of the sun or a star; = cross-staff, n. 2a, Jacob's staff, n.…
| 单词 | θ103694 | 
| 释义 | the world > space > relative position > vertical position > 			[noun]		 > vertical object or part > main upright part > of a cross (2)		 radius1597 Chiefly Astronomy and Nautical. An instrument formerly used for taking the altitude of the sun or a star; = cross-staff, n. 2a, Jacob's staff, n.… shaft1781 A stem, columnar or straight portion of something. The upright part of a cross; esp. the part between the arms and the base.  | 
	
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