κράνος
From LSJ
Σοφοῖς ὁμιλῶν καὐτὸς ἐκβήσῃ σοφός → Dat sapere consors vita cum sapientibus → Der Umgang macht mit Weisen weise dich auch selbst
English (LSJ)
(A) [ᾰ], εος, τό,
A helmet, Hdt.1.171, 4.180, al., A.Th.385, E. El.470 (lyr.), Ar.Ach.584, 1103, X.Cyr.6.1.51, IG12.278.49, Plu.2. 789d, Jul.Or.2.53b. 2 metaph., τὸ δὲ τοῦδε κ. ὁ κοινὸς ἀήρ Aret. SD2.6. II ship's ram, Tim. Pers.21. (The ᾰ shows that it is akin to κρᾰναός (hard), rather than to κρᾱνίον.)
κράνος (B) [ᾰ], ου, ἡ, later form for κράνον, Gp.7.35.1. 2 rod of cherry-wood, PTeb.39.31 (ii B. C.); χιτῶνί καὶ κράνῳ καὶ πιλίῳ ib.230 (ii B. C.) (here perh. = κράνος A).