τριγλώχις
From LSJ
ἔγνω δὲ φώρ τε φῶρα καὶ λύκος λύκον → the thief knows the thief and the wolf knows the wolf, and thief knows thief and wolf his fellow wolf, set a thief to catch a thief
English (LSJ)
ῑνος, ὁ, ἡ,
A three-barbed, ὀϊστός, ἰός, Il.5.393, 11.507; τριγλώχινα (sc. Σικελίαν) Pi.Fr.322; τ. ὑμένες tricuspid valves of the heart, Erasistratei ap. Gal.5.548, Gal. UP6.14: in later writers with a neut. Subst., ἄορι τ. Call.Del.31; τ. τόξα Anon. ap. Suid.; βέλη τ. Paul.Aeg.6.88.—The nom. form τριγλώχιν is cited from Simon. (Fr.248) and from Call. (Fr.382( = Aet.Oxy.2079.36)) by Choerob. in Theod.1.267 H.