χελωνάριον
From LSJ
Περὶ τῶν Ἱπποκράτους καὶ Πλάτωνος δογμάτων → On the Doctrines of Hippocrates and Plato
English (LSJ)
τό, Dim. of χελώνη,
A inferior tortoise-shell, Peripl. M.Rubr.10. 2 tail-piece, of the stand of a torsion-engine, Hero Bel.84.8.