Noun – Residue
1 : a usually small amount of something that remains after a process has been completed or a thing has been removed
The grill was covered in a greasy residue from the hamburgers.
The divorce left a residue of pain in the family.
There was some kind of sticky residue on the floor.
2 (count) formal : the amount of something valuable (such as an estate) that is left after all debts have been paid
She left the residue of her estate to her daughter.