(baseball) A situation in which two baserunners attempt to steal a base simultaneously. This is usually called by the manager when there are runners on first base and second base.

(mycology) Describes an annulus with two layers of tissue.

A colloid in which an emulsion is suspended either in a third liquid, or in a second instance of the inner liquid e.g. water in oil in water

plural of double whammy

plural of double-whammy

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

present participle of double-book

(transitive) To book or reserve something for two people simultaneously. / (reflexive) To make arrangements to do two things at the same time, such that it is impossible to keep both arrangements.

simple past tense and past participle of double-book

plural of double play