Definition of guise

• n. - Customary way of speaking or acting; custom; fashion; manner; behavior; mien; mode; practice; -- often used formerly in such phrases as: at his own guise; that is, in his own fashion, to suit himself.
• n. - External appearance in manner or dress; appropriate indication or expression; garb; shape.
• n. - Cover; cloak; as, under the guise of patriotism.