Stain

[Tina]

Rob someone, usually for drugs.

[Michiko]

Mark or discolour with something that is not easily removed.

[Oralee]

To come up, rob someone

[Tanya Shivari]

A person in your life you cant get rid of or deny knowing. Other aspects of your life are fine, but there lies a big old reminder and someone is always pointing it out. Every time you look at him/her, you wish your life was stain-free.