roof
/ɹuːf/
The external covering at the top of a building.
The roof was blown off by the tornado.
The top external level of a building.
Let's go up to the roof.
The upper part of a cavity.
The palate is the roof of the mouth.
The surface or bed of rock immediately overlying a bed of coal or a flat vein.
(rockclimbing) An overhanging rock wall