A culvert, usually of reinforced concrete, which is rectangular in cross section.

A chisel, one end of which is notched; used to pry open boxes that are nailed.

A sliding bolt which is rectangular in cross section; attached to a door at the edge, it slides into a

A hollow beam, usually rectangular in section; if fabricated of steel, the sides are steel plates welded together, or they

1. A private seating area for spectators in an auditorium, usually located at the front or side of a mezzanine

1. A plain, convex molding, usually three-quarters of a circle in section. 2. A torus or round molding. 3. The