/ kɒd; NAmE kɑːd/ noun , adjective
■ noun
[ C , U ] ( pl. cod ) a large sea fish with white flesh that is used for food :
fishing for cod
cod fillets
■ adjective
[ only before noun ] ( BrE , informal ) not genuine or real :
a cod American accent
cod psychology
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WORD ORIGIN
Middle English : of unknown origin; one suggestion is that the word is the same as Old English cod(d) bag , because of the fish's appearance.