κωλυτήρ
From LSJ
τούτων γάρ ἑκάτερον κοινῷ ὀνόματι προσαγορεύεται ζῷον, καί ὁ λόγος δέ τῆς οὐσίας ὁ αὐτός → and these are univocally so named, inasmuch as not only the name, but also the definition, is the same in both cases (Aristotle, Categoriae 1a8-10)
English (LSJ)
ῆρος, ὁ,
A = κωλυτής, τῶν ἀδικούντων Archyt.3; θεοὶ . . τῶν κακῶν κ. Porph. ap. Eus.PE4.9; ἀριθμὸς κ. τῶν περαιτέρω ἐπιμορίων Iamb. in Nic.p.52 P.
German (Pape)
[Seite 1543] ῆρος, ὁ, der Verhindernde, Iambl. u. a. Sp. S. κωλυτής.