Liddell-Scott-Jones

ἐγγύη (enguē) surety ^G:N-F

ἐγγύη-η

(rarely ἐγγύηα; but τὴν ἐγγύηαν [Refs 5th c.BC+]:—pledge put into one's hand: generally, surety, security, whether received or given, [Refs 8th c.BC+]; ἐγγύηας ἀποτίνειν ὑπέρ τινος [Refs 5th c.BC+]; ἐ. ἐγγυᾶσθαι (see. ἐγγυάω 11); ἀποδιδόναι [Refs 4th c.BC+]; ἐ. ὁμολογεῖν, = Latin vadimonium facere, [ἐγγύηας ἄτα 'στι θυγάτηρ, ἐγγύηα δὲ ζαμίας 5th c.BC: Epicharmus Comicus 268: proverbial, ἐγγύηη, πάρα δ᾽ ἄτη 5th-6th c.BC: Plato Philosophus “Charmides” 165a, etc. ">Refs 5th c.BC+]

__2 betrothal, [Refs 5th c.BC+]
__3 ἐ.· σημεῖον ἐν θυτικῇ, [Refs 5th c.AD+] [; ῡ only in [Refs]