unclaimed
adjective uk/ʌnˈkleɪmd/ us/ʌnˈkleɪmd/
无主的;所有者不明的;无人领取的
If something is unclaimed, no one has said that it belongs to them or that they should have it.
unclaimed prizes 无人领取的奖金
More than €2.5 million lies unclaimed in bank accounts. 银行账户里有超过两百五十万欧元的无主存款。