Keystone
"Keystone" in French
claveau
(the top stone of an arch)
clef d'arc
(the top stone of an arch)
clef de voûte
(the top stone of an arch)
clef de voûte
(something on which other things depend for support)
clé d'arc
(the top stone of an arch)
clé de voute
(the top stone of an arch)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.