Definition of roof
What does the word roof mean?
part of speech: noun, transitive verb
Upper covering of house on building usu. supported by its walls (under one\'s roof, in one\'s house, esp. w. ref. to hospitality; also fig., as the r. of heaven; r. of the world, high mountain range; r. of the mouth, palate; under a r. of foliage), top of covered vehicle esp. when used for outside passengers; r.-tree, ridge-pole of r.; hence roofage (1) n., (-)roofed, roofless, aa. (Vb) cover with r., be r. of, (often in, over); hence roofing (3) n. [old English]