Astrolabe
As´tro`labe Pronunciation: ăs´trô`lāb
| n. | 1. | (Astron.) An instrument for observing or showing the positions of the stars. It is now disused. |
| 2. | A stereographic projection of the sphere on the plane of a great circle, as the equator, or a meridian; a planisphere. |
| Noun | 1. |  astrolabe - an early form of sextant |