four-by-four

noun5

1. •
   A four-wheel-drive vehicle with a four-speed transmission.
2. •
   A four-wheel vehicle with four-wheel-drive.
3. •
   any four-wheel-drive vehicle.
4. •
   A four-inch per four-inch gauze or similar material.
5. •
   (UK, slang) A woman who has had four children by four different fathers.