/ ˈkəʊkəʊ; NAmE ˈkoʊkoʊ/ noun
1.
[ U ] dark brown powder made from the crushed seeds (called cocoa beans ) of a tropical tree
2.
[ U ] a hot drink made by mixing cocoa powder with milk and/or water and usually sugar :
a mug of cocoa
3.
[ C ] a cup of cocoa
—compare chocolate , drinking chocolate
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WORD ORIGIN
early 18th cent. (denoting cacao seed): alteration of cacao .