portmanteau

(noun) a new word formed by joining two others and combining their meanings. Synonyms: blend, portmanteau word. Examples: "`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."

(noun) a large travelling bag made of stiff leather. Synonyms: Gladstone, Gladstone bag.