ETYM French, from Italian doccia, from docciare to flow, pour, from an assumed Late Lat. ductiare, from Latin ducere, ductum, to lead, conduct (water). Related to Duct.
1. A small syringe with detachable nozzles; used for vaginal lavage and enemas; SYN. douche bag.
2. Irrigation with a jet of water or medicated solution into or around a body part (especially the vagina) to treat infections or cleanse from odorous contents.

To direct a spray of water into a bodily cavity, for cleaning.