Material used on the outside of a roof, such as shingles.
The process of constructing a roof or roofs.
A way of travel which consists in clambering over the roofs of skyscrapers.
A flared extension at the base of a sloped roof.
A toothed wheel that enmeshes with a chain or other perforated band.
The tooth of such a wheel.
A placeholder name for an unnamed, unspecified, or hypothetical manufactured good or product.