fob

中文： 表袋、表链、遥控钥匙

1. A little pocket near the waistline of a pair of trousers or in a waistcoat or vest to hold money or valuables, especially a pocket watch.
2. A short chain or ribbon to connect such a pocket to the watch.
3. A small ornament attached to such a chain. · fob seal
4. A hand-held electronic device that can be used as a remote control or as a key to unlock motor cars, doors, etc., and thus, modern car keys.

复数 fobs