Sextant
WordNet
noun
(1) A measuring instrument for measuring the angular distance between celestial objects; resembles an octant
(2) A unit of angular distance equal to 60 degrees
WiktionaryText
Etymology
From , a bronze coin worth one-sixth of an .
Noun
- A navigational device for deriving angular distances between objects so as to determine latitude and longitude.
- One sixth of a circle or disc; a sector with an angle of 60°.