(physiology, dated) To restrain one's urge to urinate. / (idiomatic) To be patient; to control one's impulses.

A herb in the mint family, Mentha aquatica.

plural of water boatman

(idiomatic) An event or set of events which has already happened and cannot be changed.

plural of watt-hour meter

(idiomatic) Synonym of throw cold water on (“to belittle or dismiss”).

Alternative form of still waters run deep

(transitive, idiomatic) (of an achievement, emotion, idea, suggestion, etc.) to belittle or dismiss; to cast doubt upon; to debunk.

plural of water tower

A person with a calm appearance has, or may have, considerable inner emotion, character, or intellect.