capital
The uppermost part of a column or pillar crowning the shaft and supporting the entablature. The decoration of the capital characteristizes the ancient greek orders of architecture. In Doric order the capitals are decorated with abacus and echinus, in Ionic with spiral scrolls (volutes), while the corinthian capitals are composed of small corner volutes and a basket-shaped body decorated with rows of acanthus leaves.

cistern
A receptacle for holding rainwater, but also water transported from elsewhere, in order to keep it stored. The cisterns were either covered eiter open, and they could have more than one compartements.

console
An ornamental bracket, usually formed with scrolls and spirals.

cross- (groin-) vault
A vault formed over square or rectangular spaces by the interpenetration of two barrel-vaults of equal hight and diameter. The lines of the intersection form a diagonal cross.

dosseret
Architectural member of marble with the form of inverted truncated pyramid, that was placed between the capital and arc.