πεῖρας
From LSJ
ὑπὸ δὲ τῆς φιλαυτίας παρηγμένοι ἄλογα φασὶν τὰ ζῷα ἐφεξῆς τὰ ἄλλα σύμπαντα → it is self-love which leads them to say that all the other animals without exception are non-rational
English (LSJ)
v. πεῖραρ.
German (Pape)
[Seite 545] ατος, τό, = πεῖραρ.
English (Slater)
πεῑρας
a limit c. appositive gen. ἤτοι βροτῶν γε κέκριται πεῖρας οὔ τι θανάτου (byz.: πέρας codd.) (O. 2.31)
b (means of) execution καὶ τάχα πείρατ' ἀέθλων δείκνυεν (P. 4.220)
c rope met. πολλῶν πείρατα συντανύσαις ἐν βραχεῖ strands of many themes (P. 1.81)
Dutch (Woordenboekgrieks.nl)
πεῖρας -ατος, τό zie πεῖραρ.