Cocagne \Coc*agne"\, n. [F. cocagne, pays de cocagne; of uncertian origin, cf. Prov. F. couque cake, Catal. coca, L. coquere to cook; as if the houses in this country were covered with cakes. Cf. {Cook}, {Cockney}.] 1. An imaginary country of idleness and luxury. 2. The land of cockneys; cockneydom; -- a term applied to London and its suburbs. --Smart.