1a member of an American Indian people living chiefly in New Mexico and Arizona. Under the leadership of Geronimo, the Apache were the last American Indian people to be conquered by the European settlers.
2 [mass noun] any of the Athabaskan languages of the Apache, which have about 14,000 speakers altogether, though some are virtually extinct.
relating to the Apache or their language.
from Mexican Spanish, probably from Zuni Apachu, literally 'enemy'