1. horizontal crossbeams that strengthen the stern of a boat or ship
Usage: nautical
2. horizontal bars or beams that divide a window or door opening
Usage: architecture
3. small windows above doors or larger windows
Usage: architecture

Examples

• The boat’s transoms were reinforced with steel brackets.
• The shipwright carefully fitted the transoms to strengthen the hull.
• Gothic windows often feature decorative transoms dividing the glass.
• The transom above the front door let natural light into the hallway.
• Victorian houses commonly had transoms over their interior doorways.
• The architect specified wooden transoms to match the window frames.
• Stained glass transoms added elegance to the church entrance.