Defined in Mesa Grande dictionary as, "Southern Diegueño Indians (lit. Those who face the water from a cliff)".
May refer to the western Kumeyaay who lived by the coast.
Related words: meyay "is steep", 'emat kumeyay "cliff", lit. "steep land"
Only reference in Barona dictionary is Kemeyaay Aa "Kumeyaay Language", supplied by a Tiipay speaker.