cartibulum
From LSJ
cartĭbŭlum: (-blum), i, n.,
I a kind of oblong table of stone, standing on a pedestal: a gerendo gertibulum, unde cartibulum post dictum, Varr. L. L. 5, § 125 Müll. p. 35 sq. Bip.
cartibulum cartibuli N N :: kind of oblong table standing on a pedestal