Ceiling
01
天井, 部屋の天井
the highest part of a room, vehicle, etc. that covers it from the inside
例
He stood on a ladder to change a lightbulb on the ceiling.
彼は天井の電球を交換するために梯子の上に立った。
02
天井
(meteorology) altitude of the lowest layer of clouds
03
天井, 上限
an upper limit on what is allowed
04
天井
maximum altitude at which a plane can fly (under specified conditions)
