residue
/ˈrezɪdjuː/noun
1- a small amount of something that remains after the main part has gone or been taken or used残留物, 剩余。
1.1
- Law the part of an estate that is left after the payment of charges, debts, and bequests【律】（扣除应付款项、债款、遗赠后的）剩余遗产, 余产。
1.2
- a substance that remains after a process such as combustion or evaporation残渣, 剩余物。
词源
late Middle English: from Old French residu, from Latin residuum 'something remaining' （see RESIDUUM）.