4x4
noun
ˈfȯr-bī-ˌfȯr 
variants or less commonly four-by-four
: a four-wheel automotive vehicle (such as a pickup) equipped with four-wheel drive
Word History
First Known Use
1937, in the meaning defined above
- keep someone or something back
- keep someone or something going
- keep someone posted
- keep someone sweet
- keep something close to one's chest
- keep something close to the vest
- keep something under one's hat
- keep something up one's sleeve
- keep step
- keep tabs on
- keep the ball rolling
- keep the faith
- keep the wolf from the door
- keep things in proportion
- keep time
- keep to
- keep to oneself
- keep track
- keep under
- keep under one's hat
- keep under surveillance
- keep up
- keep up (with)
- keep up appearances
- keep up on