cap tile meaning

[Architecture]

A tile used as a coping stone atop a wall.

Examples

1. The cap tiles had been heavily pitted by weathering; the replicas were artificially weathered to match.
2. Take out all that old caulk, then buy some 4 1 / 4-by-4 1 / 4-inch cap tiles, those with a curved top and used to top off a wall of tile.