Pull the plug

1. Lit. to turn off someone’s life-support system in a hospital. (Based on pull the plug (on something) {2}. This results in the death of the person whose life support has been terminated.) They had to get a court order to pull the plug on their father. Fred signed a living will making it possible to pull the plug on him without a court order.

1. Fig. to put an end to someone’s activities or plans. (Based on pull the plug (on something) {2}.) The mayor was doing a fine job until the treasurer pulled the plug on him. David pulled the plug on Fred, who was taking too long with the project.