(also straight·jacket ) / ˈstreɪtdʒækɪt; NAmE / noun
1.
a piece of clothing like a jacket with long arms which are tied to prevent the person wearing it from behaving violently. Straitjackets are sometimes used to control people who are mentally ill.
2.
( disapproving ) a thing that stops sth from growing or developing :
the straitjacket of taxation