Hy"dra*gogue (?), a. [L. hydragogus conveying off water, Gr. ; "y`dwr water + to lead: cf. F. hydragogue.] Med.
Causing a discharge of water; expelling serum effused into any part of the body, as in dropsy.
A hydragogue medicine, usually a cathartic or diuretic.
© Webster 1913.