I. noun
also straight·jack·et ˈstrāt-ˌja-kət
Date: 1814
1. : a cover or overgarment of strong material (as canvas) used to bind the body and especially the arms closely in restraining a violent prisoner or patient
2. : something that restricts or confines like a straitjacket
II. transitive verb
also straightjacket
Date: 1863
: to confine in or as if in a straitjacket