keystone in French
keystone in French
clef de voûte
(architecture) The top stone of an arch.
claveau
(architecture) The top stone of an arch.
clef d'arc
(architecture) The top stone of an arch.
clé d'arc
(architecture) The top stone of an arch.
clé de voute
(architecture) The top stone of an arch.
clef de voûte
Something on which other things depend for support.