τρυφάλεια
From LSJ
Ὅσον ζῇς, φαίνου, μηδὲν ὅλως σὺ λυποῦ· πρὸς ὀλίγον ἐστὶ τὸ ζῆν, τὸ τέλος ὁ χρόνος ἀπαιτεῖ. → While you live, shine; have no grief at all; life exists only for a short while, and time demands its toll.
English (LSJ)
[ᾰλ], ἡ,
A helmet, Il.3.372, 12.22, al.; τρίπτυχος 11.352; αὐλῶπις 13.530; ἵππουρις 19.382; λευκολόφους τ., as an exaggerated Ep. phrase, Ar.Ra.1016. (τρῠ- does not stand for τρι- 'three' as supposed by Hsch. (v. sq.); -φάλεια is perh. related to φάλος, ἀμφίφαλος, ἄ-φαλος.)