Real Dictionary

douche
countable noun: A douche is a method of washing the vagina using a stream of water. You also refer to the object which you use to wash the vagina in this way as a douche.
verb: To douche means to wash the vagina using a stream of water.

douche in American English
a jet of liquid applied externally or internally to some part of the body, esp. as a bath or treatment
to apply a douche to (some part of the body, esp. the vagina)
intransitive verb: to use a douche or douches; undergo douching
noun: a jet or current of water, sometimes with a dissolved medicating or cleansing agent, applied to a body part, organ, or cavity for medicinal or hygienic purposes
transitive verb: to apply a douche to

douche in British English
noun: a stream of water or air directed onto the body surface or into a body cavity, for cleansing or medical purposes
verb: to cleanse or treat or be cleansed or treated by means of a douche