seat belt

  1. a device consisting of an anchored strap or straps that buckle across the hips to hold a seated passenger safely in place as during a collision
  2. such a device combined with a shoulder harness, as in an automobile
Also written seatbelt

noun

See seat belt in American Heritage Dictionary 4

noun
A safety strap or harness designed to hold a person securely in a seat, as in a motor vehicle or aircraft. Also called safety belt.

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