noun
- dormer windows or openings in a roof or spire, typically for ventilation or light
Usage: architectural
Examples
- The church spire featured several lutherns to provide natural lighting.
- The architect designed lutherns along the roofline for better ventilation.
- Medieval cathedrals often incorporated lutherns in their bell towers.
- The restoration project included repairing the damaged lutherns.
- Lutherns allowed fresh air to circulate through the upper levels of the building.