FRIAR (Lat. frater; Ital. fra; Span. frayle or fray; Fr. frère; Celt. brair or rrair; i.e. brother), an appellation common to monks of every order, but more particularly applied to those of the mendicant orders, of which the principal were the four following; 1. minors, grey friars, or Franciscans; 2. Augustines; 3. Dominicans, or black friars; 4. Carmelites, or white friars. The name is restricted to such monks as are not priests, the latter being usually dignified with the appellation of father.