What is the meaning of Chokehold?

A grappling hold around a person's neck, especially one in which the neck is grasped tightly from behind with an arm, cutting off the flow of blood to the brain and restricting breathing.

A powerful and restrictive control or influence over something.

To put a hold around the neck of (someone), especially one in which the neck is grasped tightly from behind with an arm.

Source: wiktionary.org