- an extra tire and wheel for a motor vehicle, stored in the vehicle for use in an emergency
- Slang a bulging layer of fat around the waist
spare tirespare tire
- An additional tire carried in a vehicle as a replacement for one that goes flat.
- Slang A paunch; a potbelly.
(plural spare tires)
- Spare tire is generally a misnomer, as almost all vehicles actually carry an entire wheel with a tire mounted on it as a spare.