Apache /əˈpæ.t͡ʃi/ noun4 •Any of several Athabascan-speaking peoples of the American southwest excluding Navajo, i.e., Chiricahua, Jicarilla, Lipan, Mescalero, Plains Apache, or Western Apache.Away up at the sources of the Gila, where the pines and cedars stand and where creeks and valleys are found, is a part of the Apache land. — 1895 •A person belonging to an Apache people. •AH-64 Apache, a U.S. military helicopter. •(historical) A Parisian gangster of the late 19th and early 20th centuries. formsApaches · apaches