four-by-four

Noun

 * 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)  A woman who has had four children by four different fathers.

Synonyms

 * 4by4, 4 by 4, 4-by-4, fourbyfour, four by four, 4x4
 * 4WD