Definition of "seat belt" []

• 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "He killed the engine, left the keys in the ignition, and turned to me, unbuckling his seat belt and then mine."
• "“Fine,” I said, unbuckling my own seat belt and turning the key in the ignition the ignition."
• "Nonadopters argue that using a seat belt wrinkles their clothes or that fastening their seat belt takes too much time."