honeydew

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A sweet sticky substance excreted by various insects, especially aphids, on the leaves of plants.
2. n. A sweet exudate similar to honeydew on the leaves of plants.
3. n. A honeydew melon.

Century Dictionary and Cyclopedia

1. n. A saccharine substance found on the leaves of trees and other plants in small drops like dew. There are two kinds, one secreted from the plants, and the other by plant-lice, bark-lice, and leaf-hoppers. Bees and ants are said to be fond of honeydew. The name is properly applied to the sugary secretion from the leaves of plants, occurring most frequently in hot weather. It usually appears as small glistening drops, but if particularly abundant may drip from the leaves in considerable quantity, when it has been called manna. The manna-ash, Fraxinus Ornus, exhibits this phenomenon, as does Carduus arctioides.
2. n. A kind of chewing-tobacco prepared with molasses.

Wiktionary

1. n. A sweet sticky substance deposited on leaves by insects.
2. n. A sweet sticky substance produced by the leaves of some plants.
3. n. A melon with sweet green flesh, with a smooth greenish-white exterior.
4. n. A light bluish green colour, like that of a honeydew melon.
5. adj. Of a light bluish green colour, like that of a honeydew melon.

GNU Webster's 1913

1. n. A sweet, saccharine substance, found on the leaves of trees and other plants in small drops, like dew. Two substances have been called by this name; one exuded from the plants, and the other secreted by certain insects, esp. aphids.
2. n. A kind of tobacco moistened with molasses.
3. n. A honeydew melon.

WordNet 3.0

1. n. the fruit of a variety of winter melon vine; a large smooth greenish-white melon with pale green flesh