βοῦλλα

From LSJ

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

Source

Dutch (Woordenboekgrieks.nl)

βοῦλλα -ης, ἡ tin.