Source : Webster's Revised Unabridged Dictionary (1913)

White friar \White" fri`ar\ (Eccl.)
   A mendicant monk of the Carmelite order, so called from the
   white cloaks worn by the order. See {Carmelite}.

Source : WordNet®

White Friar
     n : a Roman Catholic friar wearing the white cloak of the
         Carmelite order; mendicant preachers [syn: {Carmelite}]