1. Usually, the topmost member of any vertical architectural element, often projecting,
with a drip as protection from the weather, e.g., the coping of a wall, top of a pedestal or buttress, the lintel of a door, etc.
2. A layer of concrete placed over rock in the bottom of foundation excavations to level the exposed surface, prevent its deterioration by weathering,
and protect it from other damage. 3. The upper
member of a column, pilaster, door cornice,
molding, and the like; also called cap trim,
wainscot cap, dado cap, chair rail cap, capital. 4.
A fitting used to close the top end of a tubular
newel.
5.A blasting cap.
6. A fitting used to close the end of a pipe.
7. A plane surface which is bonded to the bearing surface of a test specimen during its strength testing to ensure a uniform load distribution.