cosset UK /ˈkɒsɪt/US /ˈkɑsɪt/verb 3noun 2forms 5 verb3 •To treat like a pet; to overly indulge.The car cossets its occupants in comfort. •(figurative) To benefit; to make life easy for. •To fondle; to touch or stroke lovingly.The foam cossets your skin. noun2 •A pet, usually a pet lamb. •Someone indulged or cosseted. formscosseted · cossetted · cosseting · cossetting · cossets