portmanteau n 1: a new word formed by joining two others and combining their meanings; "`smog' is a blend of `smoke' and `fog'"; "`motel' is a portmanteau word made by combining `motor' and `hotel'"; "`brunch' is a well-known portmanteau" [syn: {blend}, {portmanteau word}] 2: a large travelling bag made of stiff leather [syn: {Gladstone}, {Gladstone bag}] [also: {portmanteaux} (pl)] portmanteaux See {portmanteau}