English Word · Intermediate
kingpin
The pivot or connector between a tractor and trailer in the fifth-wheel coupling of semi-trailer truck
Pronunciation: /ˈkɪŋ.pɪn/
Meaning
The pivot or connector between a tractor and trailer in the fifth-wheel coupling of semi-trailer truck.
Example
The driver checked the kingpin to ensure the trailer was securely attached to the tractor.
The driver checked the kingpin to ensure the trailer was securely attached to the tractor.
Practice tips
- Practice kingpin out loud — read the pronunciation guide above and repeat.
- Use it in your own sentence today; reuse beats rereading.
- Pay attention to context: this English word is for intermediate-level learners.