kəˈstänəwən, kōˈ- noun
( plural costanoan or costanoans )
Usage: usually capitalized
Etymology: Costano, a division of the Costanoan (from Spanish costeño, literally, coastman, from costa coast, from Latin costa rib, side) + English -an — more at coast
1.
a. : an Indian people of coastal California from San Francisco Bay to Monterey
b. : a member of such people
2. : a language of the Costanoan people
3. : a language family of the Penutian stock comprising only the Costanoan language or languages