From the second edition (1989):
†tect, n.
[ad. L. tect-um roof, prop. neut. of tectus, pa. pple. ‘covered’: see next.]


A roof. In comb. ˈtect-deˈmolished a., having the roof demolished, disroofed.

1632 Lithgow Trav. x. 432 Tect-demolished Churches, vnpassable Bridges.