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1766, "jet of water," from French douche (16c.), from Italian doccia "shower," from docciare "to spray," from Latin ductionem "a leading," from ducere "to lead" (see duke (n.)). Meaning "vaginal cleansing" is from 1833. The verb is first attested 1838. Related: Douched; douching.
A stream of water, often containing medicinal or cleansing agents, that is applied to a body part or cavity for hygienic or therapeutic purposes.
An instrument for applying a douche.