moon [-s, -'s] n

OE mona.

  1. Earth's only natural satellite; globe that reflects the sun's light onto the earth; sphere-shaped heavenly body which revolves around the earth causing a gravitational pull of the waters on the surface from which the tides are formed.
  2. Reflection of the sun's light; light of the earth's natural satellite.
  3. Man (so-called “man-in-the-moon”); physical features of the moon's surface that refract and reflect the sun's light, sometimes causing the appearance of facial features.
  4. Full disk of the moon; appearance of the earth's satellite as a complete circle.