1. 
[syn: blend, portmanteau word, portmanteau]
The Collaborative International Dictionary of English v.0.48:
portmanteau word \port*man"teau word`\, n. [See portmanteau.]
   A word formed by joining two others; -- as, smog is formed
   from smoke and fog.
   [Wordnet 1.6]
WordNet (r) 3.0 (2006):
portmanteau word
    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, portmanteau]
Moby Thesaurus II by Grady Ward, 1.0:
22 Moby Thesaurus words for "portmanteau word":
   ambiguity, amphibology, blend, contamination, counterword,
   double entendre, equivocal, equivocality, equivocation, equivoque,
   hybrid, hybrid word, hybridism, macaronic, macaronicism,
   polysemant, portmanteau, portmantologism, pun,
   squinting construction, telescope word, weasel word