straightjacket
noun /ˈstreɪtdʒækɪt/
/ˈstreɪtdʒækɪt/
(also straitjacket)
- a piece of clothing like a jacket with long arms which are tied to prevent the person wearing it from behaving violently. Straightjackets are sometimes used to control people who are mentally ill.
- (disapproving) a thing that stops something from growing or developing