A dress of strong materials for restraining maniacs or those who are violently delirious. It has long sleeves, which are closed at the ends, confining the hands, and may be tied behind the back.
- A long-sleeved jacketlike garment used to bind the arms tightly against the body as a means of restraining a violent patient or prisoner.
- Something that restricts, hinders, or confines: the straitjacket of bureaucratic paperwork.
- To restrain, restrict, or hinder by or as if by confining in a straitjacket.