an upper limit on what is allowed
maximum altitude at which a plane can fly (under specified conditions)
(meteorology) altitude of the lowest layer of clouds
the overhead upper surface of a covered space
an upper limit on what is allowed
a protective covering that covers or forms the top of a building
protective covering on top of a motor vehicle
provide a building with a roof; cover a building with a roof
the inner top surface of a covered area or hollow space
