معنی کلمه :‌ volacious

Apt or fit to fly.

Culminating, or coming to the meredian, at or about the same time with the moon; -- said of a star or stars, esp. of certain stars selected beforehand, and named in an ephemeris (as the Nautical Almanac), as suitable to be observed in connection with the moon at culmination, for determining terrestrial longitude.