Source : Webster's Revised Unabridged Dictionary (1913)

Fratricelli \Fra`tri*cel"li\, n. pl. [It. fraticelli, lit.,
   little brothers, dim. fr. frate brother, L. frater.] (Eccl.
   Hist.)
   (a) The name which St. Francis of Assisi gave to his
       followers, early in the 13th century.
   (b) A sect which seceded from the Franciscan Order, chiefly
       in Italy and Sicily, in 1294, repudiating the pope as an
       apostate, maintaining the duty of celibacy and poverty,
       and discountenancing oaths. Called also {Fratricellians}
       and {Fraticelli}.