quarterlight
/ˈkwɔːrtərlaɪt/
noun
- A small triangular or rectangular window in a vehicle, often near the front door or rear side, that can be opened for ventilation.
- He opened the quarterlight to let some fresh air into the car without rolling down the main window.
- She adjusted the quarterlight to reduce the wind noise while driving.
- The old classic car had a quarterlight that could be tilted outward.