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'.
(..) Let's unload the rest of this, get it up top. Now, what are you waitin' for? Shut up. All right, Ellis. Can you climb that trunk, -choke this off that limb? - Yeah. Tie it in a bowline knot, you know it? I'm not stupid. Neck, I need you to start cuttin' line in two-foot pieces. (..)2012 Mud