cibolero UK /ˌsiː.bəˈlɛ.ɹəʊ/US /ˌsi.bəˈlɛ.ɹoʊ/ noun1 •(historical) A Spanish colonial (and later Mexican) buffalo hunter from New Mexico.When the cibolero returned to the plain, he was received with a fresh burst of vivas, and kerchiefs were waved to greet him. — 1855 formsciboleros