ῥιζάγρα
From LSJ
τὸ ἀνάλημμα καὶ τὴν ἐπ' αὐτοῦ κερκίδα → the retaining wall and the wedge of theatre seats supported by it
English (LSJ)
ἡ,
A instrument for extracting the roots of a tooth, Cels.7.12.1, Paul.Aeg.6.88.
German (Pape)
[Seite 842] ἡ, die Wurzelzange, Zahnwurzeln, Splitter u. dgl. damit herauszuziehen, Medic.