/ pɔːtˈmæntəʊ; NAmE pɔːrtˈmæntoʊ/ noun , adjective
■ noun
( pl. -eaus or -eaux ) ( old-fashioned ) a large heavy suitcase that opens into two parts
■ adjective
[ only before noun ] consisting of a number of different items that are combined into a single thing :
a portmanteau course
'Depression' is a portmanteau condition.
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WORD ORIGIN
mid 16th cent.: from French portemanteau , from porter carry + manteau mantle.