( especially BrE )
1.
to be responsible for or to take care of sb/sth :
Who's going to look after the children while you're away?
I'm looking after his affairs while he's in hospital.
Don't worry about me—I can look after myself (= I don't need any help) .
➡ note at care
2.
to make sure that things happen to sb's advantage :
He's good at looking after his own interests.