(sciences, uncountable) Ice made of frozen water; water in a solid physical state, especially when distinguished from other frozen substances. Contrast liquid water, water vapor.

(uncountable) Chinese water chestnut (Eleocharis dulcis), grown for its edible corm, used in Asian cooking. / (countable) A corm of a plant of this species. / A water caltrop (Trapa natans).

A man or boy who regularly supplies a sports team or other group with drinking water.

Water available from taps. / Used other than figuratively or idiomatically: see running, water.

(idiomatic) To withstand scrutiny or criticism; to be valid.

A large ungulate, widely used as a domestic animal in Asia, South America. North Africa and Europe: Bubalus bubalis. / (US, colloquial) A water tank mounted on a trailer to be towed by a motor vehicle.

(euphemistic) To urinate. / (nautical) To admit water; to leak.

(chemistry) Water in its standard form of H₂O, containing two protium hydrogen atoms, as opposed to heavy water.

(chemistry) Water containing deuterium instead of normal hydrogen (protium) (symbol D₂O); used as a moderator in nuclear reactors.

A spout connected to a socket to provide water from the main water supply.