στρεβλωτήριον

From LSJ

οὐδείς ἑκὼν πονηρὸς οὐδ' ἄταν ἔχων → no one is willingly wretched or unlucky

Source

German (Pape)

[Seite 953] τό, Folter -od. Marterwerkzeug, Ios.