1.
rooftop, roof
The top surface of a building, especially when accessible.
This hotel has a pool on the rooftop, and you can swim there in summer.
屋上 refers to the rooftop of a building, especially when it's accessible.
Components: 屋 (roof/building) + 上 (top/above)
In Japan, many department stores (デパート) have rooftop areas with gardens, play areas, or restaurants, making 屋上 a familiar destination.
Common collocations:
- 屋上駐車場: rooftop parking
- 屋上庭園: rooftop garden
- 屋上へ上がる: to go up to the rooftop