[f. COPING sb.1 + STONE.]
1. One of the stones forming the coping of a wall.
1778. Phil. Trans., LXVIII. 236. Cemented into the copeing stones on the parapet-wall.
1844. Hood, Haunted H., I. vii. The time-worn coping-stone had tumbled after!
1885. E. Arnold, Secret of Death, 4. The monkey-peoples mild brown eyes Glittered from bough and coping-stone.
2. fig. = COPE-STONE.
1860. Farrar, Orig. Lang., i. 5, note. Comparative Grammar has deserved the title of the coping-stone of philological inquiries.
1885. J. Payn, Talk of Town, II. 150. A question that put the coping-stone on the young fellows embarrassment.