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1. The top stone of a structure or wall.
2. The crowning achievement or final stroke; the culmination or acme.


(ˈkæpˌstəʊn) or


1. (Building) one of a set of slabs on the top of a wall, building, etc
2. (Mountaineering) mountaineering a chockstone occurring at the top of a gully or chimney
3. a crowning achievement; peak: the capstone of his career.



1. a finishing stone of a structure.
2. the crowning achievement.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.capstone - a final touchcapstone - a final touch; a crowning achievement; a culmination
touch - deftness in handling matters; "he has a master's touch"
2.capstone - a stone that forms the top of wall or building
stone - building material consisting of a piece of rock hewn in a definite shape for a special purpose; "he wanted a special stone to mark the site"
wall - an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure; "the south wall had a small window"; "the walls were covered with pictures"


n (Archit) (lit, fig)Schlussstein m; (of wall) → Mauerkappe f
References in periodicals archive ?
It was the cap-stone of a supersonic climb-out for the GCC airlines which triggered a lobbying, legal and political battle in Washington and a parallel push in Brussels un-matched for its rancour, even for the raucous business of international aviation.
The disagreements threaten a cap-stone of Bush's Iraq policy during his remaining months in office.
As the cap-stone project of the 42nd Street Development Project, we designed a unique tower that celebrates the western gateway to Times Square and the New 42nd Street entertainment corridor.