Chumash
noun
Chu·mash ˈchü-ˌmash 
1
plural Chumash : a member of an Indigenous people of southwestern California
2
: the family of languages spoken by the Chumash people
Word History
Etymology
from Tcú-mac, name in a coastal Chumash language for the inhabitants of Santa Rosa Island
First Known Use
1891, in the meaning defined at sense 1