Definition of no moon
- There's no moon tonight.
: the earth's natural satellite (see satellite 2a) that shines by the sun's reflected light, revolves about the earth from west to east in about 29¹/₂ days with reference to the sun or about 27¹/₃ days with reference to the stars, and has a diameter of 2160 miles (3475 kilometers), a mean distance from the earth of about 238,900 miles (384,400 kilometers), and a mass about one eightieth that of the earth
: one complete moon cycle consisting of four phases (see 1phase 1)
: to spend in idle reverie : dream
: to expose one's naked buttocks to
: to spend time in idle reverie : behave abstractedly
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