Definitions
1.nounThe external covering at the top of a building."The roof was blown off by the tornado."
2.nounThe top external level of a building."Let's go up to the roof."
3.nounThe upper part of a cavity."The palate is the roof of the mouth."
4.nounThe surface or bed of rock immediately overlying a bed of coal or a flat vein.
5.noun(rockclimbing) An overhanging rock wall
6.verbTo cover or furnish with a roof.
7.verbTo traverse buildings by walking or climbing across their roofs.
8.verbTo put into prison, to bird.
9.verbTo shelter as if under a roof.