Arrestors are devices that are used to prevent or slow down the motion of an object. They are typically found in a range of applications, including engineering, aviation, and transportation. Some common synonyms for arrestor include a stopper, a restraint, a blocker, and a halter. Other words that are often used to describe arrestors include a damper, a shock absorber, a stabilizer, and a safety device. In aviation, an arrestor cable is a device used to slow down an aircraft that has overrun its stop line, and in automotive engineering, an arrestor can refer to the device that stops the wheels of a vehicle from spinning too quickly.