contignatio
From LSJ
Latin > English (Lewis & Short)
contignātĭo: ōnis, f. contigno, a joining together of beams; hence, concrete,
I a floor composed of joists and boards; a story, floor, Caes. B. C. 2, 9; 2, 15; Auct. B. Alex. 1; Vitr. 2, 9; Liv. 21, 62, 3; Pall. 1, 9, 2 al.
Latin > French (Gaffiot 2016)
contignātĭō,¹³ ōnis, f. (contigno), plancher : Cæs. C. 2, 9, 2 || étage : Liv. 21, 62, 3.