1. an african vine (Citrullus lanatus) cultivated for its large edible fruit.
2. the fruit of this plant, having a hard green rind and sweet watery pink or reddish flesh.

1. A plant of the species Citrullus lanatus, bearing a melon-like fruit.
2. the fruit of the watermelon plant, having a green rind and watery flesh that is bright red when ripe and contains black pips.
3. an environmentalist with socialist leanings (from the similarity to the fruit, being green on the outside, and red on the inside).

1. the very large ovoid or roundish fruit of a cucurbitaceous plant (Citrullus vulgaris) of many varieties; also, the plant itself. the fruit sometimes weighs many pounds; its pulp is usually pink in color, and full of a sweet watery juice. it is a native of tropical africa, but is now cultivated in many countries. see Illust. of melon.

1. A plant, Citrullus vulgaris (frequently named Cucumis Citrullus), or its fruit.

1. large oblong or roundish melon with a hard green rind and sweet watery red or occasionally yellowish pulp
2. an african melon