Portmanteau \Port*man"teau\, n.; pl. Portmanteaus. [F. porte-manteau; porter to carry + manteau a cloak, mantle. See Port to carry, and Mantle.]

A bag or case, usually of leather, for carrying wearing apparel, etc., on journeys. --Thackeray.

Source: Webster's Revised Unabridged Dictionary (1913)