melon

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various vines of the family Cucurbitaceae, especially Cucumis melo or Citrullus lanatus, widely cultivated for their edible fruit.
• noun The fruit of any of these plants, having a hard rind and juicy flesh.
• noun A fatty structure in the forehead of cetaceans, especially the toothed whales, thought to be used in the production of high-frequency sounds.
• noun Vulgar Slang A woman's breasts.

from The Century Dictionary.

• noun A herbaceous succulent trailing annual plant, Cucumis Melo, natural order Cucurbitaceæ, or its fruit, the muskmelon.
• noun The watermelon, Citrullus vulgaris.
• noun A melon-shell.
• noun A hemispherical mass of blubber taken from the top of the head of the black-fish, grampus, and related cetaceans; melon-blubber.
• noun Same as pademelon.

from the GNU version of the Collaborative International Dictionary of English.

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

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of various fruits of the family Cucurbitaceae grown for food, generally not including the cucumber.
• noun A light pinkish orange colour, like that of some melon flesh.
• noun in the plural, slang Breasts.
• noun slang The head.
• adjective Of a light pinkish orange colour, like that of melon flesh.
• noun chemistry The result of heptazine being polymerized with the tri-s-triazine units linked through an amine (NH) link.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any of numerous fruits of the gourd family having a hard rind and sweet juicy flesh
• noun any of various fruit of cucurbitaceous vines including: muskmelons; watermelons; cantaloupes; cucumbers