part of speech: noun

definition 1: the earth’s natural satellite. It revolves around the earth from west to east in about 28 days. The moon joins the earth in its orbit around the sun. The moon does not give off light. Instead, its shine comes from the light it reflects from the sun.

definition 2: any planet’s natural satellite.

  • Jupiter has 16 moons.

derivations: moonless (adj.), moonlike (adj.)