noun A jet or current of water or vapour directed upon some part of the body to benefit it medicinally; in particular, such a jet directed at the vagina for irrigation.
noun Something that produces the jet or current in the previous sense, such as a syringe.
noun A jet or spray of any liquid.
noun Ellipsis of douchebag (“objectionable person”).
verb To administer a douche to; to shower; to douse