[port.man.teau] n, pl -teaus or -teaux [MF portemanteau, fr. porter to carry + manteau mantle, fr. L mantellum--more at port] (1579) 1: a large suitcase
2: a word or morpheme whose form and meaning are derived from a blending of two or more distinct forms (as smog from smoke and fog)
[2]portmanteau adj (1909) 1: combining more than one use or quality
2: being a portmanteau "a ~ word"