hy·dra·gogue noun alsohydragog\ˈhīdrəˌgäg\ (-s) Etymology: obsolete hydragogue, adjective, causing a watery discharge from the bowels, from Late Latin hydragogus, from Greek hydragōgos, from hydr- + agōgos leading, drawing forth — more at -agogue : a cathartic that causes copious watery discharges from the bowels