(architecture) A roof having a semicircular cross section; used to span large distances in railway stations etc

The various high mountainous regions in Asia, made up of the Pamirs, the Himalayas, Tibet and Mount Everest.

A common roof, having two slopes and one ridge, with eaves on both sides.

A modified form of mansard roof having a nearly flat deck for the upper slope.

(UK) A tax based on house prices, proposed as an alternative to the poll tax in the 1990s.

A roof design having two slopes on the sides and gables in the ends.

plural of roofing bone

terne (tin-based alloy)

A reflective optical prism containing a section where two faces meet at a 90° angle, resembling the roof of a building. Reflection from the two 90° faces returns an image that is flipped laterally across the axis where the faces meet.

plural of roof prism