fealty/ˈfi:əltɪ; `fiəltɪ/ n[C, U](arch 古) (oath of) loyalty owed by a feudal tenant, etc to his lord （封建时代臣仆对主人的）效忠（的誓言） take an oath of fealty 宣誓（对封建领主的）效忠.
牛津英汉双解词典