Of low alcoholic strength; light, weak. Of a specific liquor, such as ale, wine, etc., or a diluted form of one of these. See also small beer, n. Now…

figurative. Deficient in substance or quality; poor; unsubstantial. spec. Of liquor: Without body; not strong or rich; of low alcoholic strength…

Of beer, ale, etc.: Weak, poor, or inferior in quality; small. Now archaic. Also transferred.

Esp. of wine, spirits, or milk: diluted with water. Cf. watered-down, adj. 2.

Of liquor: weak, small, thin. Obsolete. rare.

Diluted; weakened or impaired by dilution.

Of liquor: Insipid, weak, thin.

a drink consisting of seven parts of water to one of spirit, typically rum; (more loosely) a drink of an extremely diluted spirit.

diluted with three times its bulk of water, as three-water grog or three-water rum; also absol.

diluted with twice its bulk of water.