Laxative

a. [Lat. laxatīvus, Fr. laxatif, Pr. laxatiu, Sp. laxativo, It. lassativo. See supra.] (Med.) Having the power or quality of loosening or opening the intestines, and relieving from constipation.

(Med.) A medicine that relaxes the bowels; a gentle purgative. Coxe.