I. ˈlak-sə-tiv adjective
Etymology: Middle English laxatif, from Medieval Latin laxativus, from Latin laxatus, past participle of laxare to loosen, from laxus
Date: 14th century
: having a tendency to loosen or relax ; specifically : producing bowel movements and relieving constipation
II. noun
Date: 14th century
: a usually mild laxative drug