θορνύομαι

From LSJ

Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνονAnaxagoras 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

Source

French (Bailly abrégé)

3ᵉ pl. sbj. prés. θορνύωνται;
s'accoupler.
Étymologie: θορός.

Russian (Dvoretsky)

θορνύομαι: (только 3 л. pl. praes. conjct.) спариваться (ἐπεὰν θορνύωνται, sc. αἱ ἔχιδναι Her.).