/ ˌkɔːnjuˈkəʊpiə; NAmE ˌkɔːrnjuˈkoʊpiə/ noun
1.
(also ˌhorn of ˈplenty ) a decorative object shaped like an animal's horn, shown in art as full of fruit and flowers
2.
( formal ) something that is or contains a large supply of good things :
The book is a cornucopia of good ideas.
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WORD ORIGIN
early 16th cent.: from late Latin , from Latin cornu copiae horn of plenty (a mythical horn able to provide whatever is desired).