coping
n. US //ˈkoʊpɪŋ// UK //kˈəʊpɪŋ// cop·ing
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1 wall covering (n.) C2 Proficiency Technical Architecturethe top layer of a wall, often made of stone or brick, designed to keep water off.
the finishing or protective cap or top course of a wall, usually sloped to shed water.
ExampleThe rain ran off the stone coping and away from the garden wall.
ExampleThe architect specified a granite coping for the parapet to ensure that moisture would not seep into the brickwork during the winter months.
From cope + -ing. The sense referring to a brick wall is cope (sense 2), used in the sense "dress in a cope," "to cover."