ἀκρόνυξ
From LSJ
κάλλιστον ἐφόδιον τῷ γήρᾳ ἡ παιδεία (Aristotle, quoted by Diogenes Laertius 5.21) → the finest provision for old age is education
English (LSJ)
-νυχος (Hdn. Gr. 2.743), = ἀκρονυχία, nightfall, S. ap. Phot. p. 68R.
German (Pape)
[Seite 84] Anfang der Nacht, B. A. 372, auch ἀκρονυχία, s. Schäf. Schol. Ap. Rh. p. 223.
Greek (Liddell-Scott)
ἀκρόνυξ: νυκτος, ἡ, = ἀκρονυχία, ἡ ἀρχὴ τῆς νυκτός, Α. Β. 372, Σουΐδ.
Spanish (DGE)
-νῠχος el anochecer S.Fr.991c, Hdn.Gr.2.743.