πετευριστήρ
From LSJ
Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Anaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep
English (LSJ)
ῆρος, ὁ,
A tumbler, acrobat, Man.4.278.
Greek Monolingual
και πεταυριστήρ, -ῆρος, ὁ Α
1. ακροβάτης
2. μτφ. ο ψύλλος.
[ΕΤΥΜΟΛ. < πετευρίζομαι «αναπηδώ, χορεύω πάνω σε σανίδα» + επίθημα -τήρ (πρβλ. κυβιστη-τήρ)].