κόϊλος

From LSJ

κάλλιστον ἐφόδιον τῷ γήρᾳ ἡ παιδεία (Aristotle, quoted by Diogenes Laertius 5.21) → the finest provision for old age is education

Source

Russian (Dvoretsky)

κόϊλος: Anacr. = κοῖλος.

German (Pape)

äol. = κοῖλος.