juncus
From LSJ
κάλλιστον ἐφόδιον τῷ γήρᾳ ἡ παιδεία (Aristotle, quoted by Diogenes Laertius 5.21) → the finest provision for old age is education
juncus junci N M :: rush
juncus,¹³ ī, m., jonc : Ov. M. 8, 336, etc. || tige semblable à un jonc : Plin. 26, 72.