A growth on the artery wall is 'choking off' the blood supply.
He was 'choking back tears' as he talked about his late wife.
She 'choked' to death. = She died by 'choking'.
(..) - Get in the fucking car. All right. - Legs, we can't do this. - Will you just drive? - This is crazy! - Don't choke on me. You don't have to obey her. You can pull the car over. Shut up! Just drive to the house. - What are you gonna do with him? (..)1996 Foxfire