劍橋詞典a piece of leather or other material to which a group of keys is fastened , or a chain or piece of material used, especially in the past, to fasten a watch to a man's waistcoat 鑰匙鏈；（尤指舊時的）懷表短鏈 a key fob 鑰匙鏈 a fob watch 帶表鏈的懷表 返回 fob