In Spanish law. one of a body, never exceeding twelve, who formed a part of the ayuntamtento. The office of re-gidor was held for llfe; that is to say, during the pleasure of the supreme authority. In most places the office was purchased; in some cltles, however, they were elected by persons of the district, called “capitula res.” 12 Pet. 442, note
Source: Black's Law Dictionary 2nd Ed (1910)