<p><strong>Noun</strong></p><ul><li>The external upper covering of a house or other building.</li><li>A frame for supporting this: an open-timbered roof.</li><li>The highest part or summit: The Himalayas are the roof of the world.</li><li>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.</li><li>A house.</li><li>Mining: the rock immediately above a horizontal mineral deposit.</li></ul><p><strong>Verb</strong></p><ul><li>To provide or cover with a roof.</li></ul>