An open subsurface space adjacent to a building used to admit light and air or as a means of access […]

1. An acting space of any shape surrounded by seats. 2. A type of theater not having a proscenium, the

Composed primarily of sand; sandy.

Composed primarily of clay or shale; clayey

A rock containing chiefly clay materials; derived from claystone, siltstone, or shale; used locally as building stone, although rarely produced

Corrugated metal or concrete barrier walls installed around a basement window to hold back the earth.