Melon

n.
  1. (Bot.) The juicy fruit of certain cucurbitaceous plants, as the muskmelon, watermelon, and citron melon; also, the plant that produces the fruit.
  2. (Zoöl.) A large, ornamental, marine, univalve shell of the genus Melo.
    3. Melon beetle (Zoöl.),
    a small leaf beetle (Diabrotiea vittata), which damages the leaves of melon vines.
    Melon cactus, Melon thistle
    1. The related genus Mamillaria, in which the stem is tubercled rather than ribbed, and the flowers sometimes large. See Illust. under Cactus.