1. a person or thing that restrains or holds back
2. a device used to limit movement or keep something in place
Usage: technical

Examples

• The safety belt acts as a restrainer during sudden stops.
• He was known as a restrainer of reckless spending in the company.
• The metal restrainer kept the heavy equipment secure during transport.
• She served as a restrainer when her friends wanted to make impulsive decisions.
• The mechanical restrainer prevented the door from swinging too far open.
• As a natural restrainer, she always encouraged caution in risky situations.