"portmanteaux" in the noun sense
1. blend, portmanteau word, portmanteau
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"
2. portmanteau, Gladstone, Gladstone bag
a large travelling bag made of stiff leather
Source: WordNet® (An amazing lexical database of English)
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