"imaginary country of abundance and bliss, the abode of luxury and idleness, lubberland," c. 1300, from Old French Cocaigne (12c.), which is of obscure origin; speculation centers on words related to cook (v.) and cake (compare Middle Dutch kokenje, a child's honey-sweetened treat; also compare Big Rock Candy Mountain). The German equivalent is Schlaraffenland ("Land of Lazy Monkeys").
Cochise
cochlea
cock
cockade
cock-a-doodle-doo
Cockaigne
cockamamie
cockatoo
cockatrice
cockchafer
cock-crow