Fanon \Fan"on\, n. [F. fanon, LL. fano, fr. OHG. fano banner cloth, G. fahne banner. See {Vane}, and cf. {Fanion}, {Gonfalon}.] (Eccl.) A term applied to various articles, as: (a) A peculiar striped scarf worn by the pope at mass, and by eastern bishops. (b) A maniple. [Written also {fannel}, {phanon}, etc.]