? （古代的一種玉器） a round flat piece of jade with a hole in its centre (used for ceremonial purposes in ancient China) ? （姓氏） a surname: ～ 光 Bi Guang ◆璧還 [書] [敬] return (a borrowed object) with thanks;decline (a gift) with thanks； 璧謝 [書] [敬] decline (a gift) with thanks