Severy
SEVERY (probably connected with the English word " sever "), in architecture, any main compartment or division of a building. The word has been supposed to be a corruption of Ciborium, as Gervase of Canterbury uses the word in this sense; but he probably alludes to the vaulted form of the upper part of the web of each severy.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)