1.
ceiling
The upper interior surface of a room, opposite to the floor.
天井が高いので開放感があります。
The room feels open because the ceiling is high.
天井からシャンデリアが下がっています。
A chandelier hangs from the ceiling.
天井に蜘蛛の巣ができていた。
A spider web had formed on the ceiling.
2.
ceiling, upper limit
A maximum level or limit (figurative use).
株価が天井に達した。
The stock price reached its ceiling.
予算に天井を設けないと、費用がどんどん増えてしまう。
If you don't set a ceiling on the budget, costs will keep rising.
原油価格が天井を打って、そろそろ下がり始めるかもしれない。
Crude oil prices may have hit their ceiling and could start to fall soon.
天井を打つ means to hit the ceiling/peak
天井 means ceiling.
天 = sky/heaven, 井 = well (referring to the recessed appearance)
Types in traditional Japanese architecture:
- 格天井 (coffered ceiling)
- 竿縁天井 (boarded ceiling with battens)
- 船底天井 (boat-bottom ceiling)
Related terms:
- 天井裏 (attic, above the ceiling)
- 吊り天井 (suspended ceiling)
- 床 (floor) - opposite
Figurative use:
- 天井知らず (no ceiling, unlimited)
- 天井を打つ (to hit the ceiling/reach max)
- Price/stock ceilings in economics