Astrolabe (noun) (historical)
as-tro-layb
An instrument used to make astronomical measurements, typically of the altitudes of celestial bodies, and in navigation for calculating latitude, before the development of the sextant.
Late Middle English from Old French astrelabe, from medieval Latin astrolabium, from Greek astrolabon, neuter of astrolabos ‘star-taking’.
Example sentences
“The antique astrolabe was auctioned off with the rest of the astronomers possessions.”
