Stranglehold (noun)

1. A tight grip around someone's throat, typically with the intent to choke.
2. A powerful grip or control that makes it difficult for someone or something to move or act freely.

Origin:

From strangle + hold.

Examples:

1. The company had a stranglehold on the market.
2. He put a stranglehold on the thief until the police arrived.
3. The new regulations put a stranglehold on small businesses.
4. He had a stranglehold on the company's finances.
5. The organization had a stranglehold on the industry that was hard to break.