quadruˈman /-man/ or quadrumane /-mān/ noun

quadrumanous /kwod-rooˈmən-əs/ adjective

(L manus a hand) belonging to the Quadruˈmana, a former name for the primates other than man, which have all four feet with an opposable digit

quadrumvir /kwod-rumˈvər/ noun

(L vir a man) a member of a quadrumˈvirate, a group of four men acting together in some capacity