Meanings
Originally the highest gear that a car could achieve; compare French en quatrième vitesse.
Full throttle; a maximal level of effort.
Used other than figuratively or idiomatically: see fourth, gear.
Example Sentences
1
He shifted into fourth gear and sped down the highway.
2
Once he hit fourth gear, the car zoomed ahead effortlessly.
3
She was going so fast in fourth gear that she didn't notice the speed limit sign.
4
The engine roared as he pushed it to fourth gear.
5
In fourth gear, the car's acceleration was remarkable.
