The process or an instance of making something double; a multiplication by two. [from 14th c.] / The act of turning around, or doubling back. [from 16th c.] / A pleat or fold. [from 17th c.]

plural of double

(sports, plural only) a game between pairs of players / (campanology, plural only) bell changes rung on five bells

Third-person singular simple present indicative form of double

simple past tense and past participle of double-hat

Third-person singular simple present indicative form of double-hat

present participle of double-hat

(intransitive) To serve in two roles simultaneously.

A large pan containing hot water, into which other smaller pans are set in order to cook food at low heat (below the boiling point) or to keep food warm.

(chemistry) A solid solution of two simple salts, often in a definite proportion