copestone , auch: copingstone

Abruptly he swung his feet down from the copestone to the floor of the veranda.

The universe is finished; the copestone is on, and the chips were carted off a million years ago.

For small erections may be finished by their first architects; grand ones, true ones, ever leave the copestone to posterity.

He stopped dead, flung the bandbox over a garden wall, and leaping upward with incredible agility and seizing the copestone with his hands, he tumbled headlong after it into the garden.

Its oppression seemed congenial to George; he sat upon the copestone of the stone parapet, his back against a stone pilaster; his attitude not comfortable, but rigid, and his silence not comfortable, either, but heavy.

Along the road, bordering Salve Regina University, an aged copestone wall - distinguished by the top layer of stones laid on edge, giving it a serrated look - signals "no trespassing," a central statement made by the walls of the wealthy.

This effect is created by projecting three courses of brick out farther than the wall below (as in a corbel), repeating it with three more courses of brick, and then repeating it again for the entire rest of the wall up to the copestone.