a word formed by joining two others (e.g., `smog' is a blend of `smoke' and `fog')
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"
a new word formed by joining two others and combining their meanings