[roof, roo
f] 
noun, plural roofs, verb | 1. | the external upper covering of a house or other building. |
| 2. | a frame for supporting this: an open-timbered roof. |
| 3. | the highest part or summit: The Himalayas are the roof of the world. |
| 4. | something that in form or position resembles the roof of a house, as the top of a car, the upper part of the mouth, etc. |
| 5. | a house. |
| 6. | Mining. the rock immediately above a horizontal mineral deposit. |
| 7. | to provide or cover with a roof. |
| 8. | go through the roof,
|
| 9. | raise the roof, Informal.
|
| roof (rōōf, rŏŏf) n.
To furnish or cover with or as if with a roof. [Middle English, from Old English hrōf.] |
roof (r&oomacr;f, r&oobreve;f)
n.
The upper surface of an anatomical structure, especially one having a vaulted inner structure.
roof
In addition to the idiom beginning with roof, also see go through the roof; hit the ceiling (roof); like a cat on hot bricks (a hot tin roof); raise the roof.