/ traʊt; NAmE / noun
1.
[ C , U ] ( pl. trout ) a common freshwater fish that is used for food. There are several types of trout :
rainbow trout
trout fishing
Shall we have trout for dinner?
2.
[ C , usually sing. ] (usually old trout ) ( informal , disapproving ) a bad-tempered or annoying old woman
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WORD ORIGIN
late Old English truht , from late Latin tructa , based on Greek trōgein gnaw.