relating to the part of a dead person's money and property that is left after taxes and debts have been paid, and bequests (= gifts)have been made

Her will left her residuary estate to her daughter.

A residuary beneficiary is the person to whom the balance of an estate is given after all other bequests are distributed. 剩余遗产受益人是指在分配完所有其他遗赠后，将获得遗产余额的人。