ἰνώδης
From LSJ
ἃ γὰρ δεῖ μαθόντας ποιεῖν, ταῦτα ποιοῦντες μανθάνομεν → what we have to learn to do we learn by doing
English (LSJ)
[ῑ], ες,
A fibrous, of parts of animals, X.Cyn.4.1, Arist.HA 497a21; ἰνωδέστατον αἷμα Id.PA651a3; of vegetables, φλοιός, φύλλον, Thphr.HP3.12.1,5, cf. Dsc.4.20; sinewy, X.Cyn.4.1.
Greek (Liddell-Scott)
ἰνώδης: ῑ, -ες, (εἶδος) πλήρης ἰνῶν, ἐπὶ μερῶν τοῦ σώματος ζῴου, Ξέν. Κυν. 4. 1, Ἀριστ. π. τ. Ζ. Ἱστ. 1. 17, 17· ἐπὶ τοῦ αἵματος, τὸ γὰρ αἷμα τούτων (δηλ. τῶν ταύρων καὶ κάπρων) ἰνωδέστατον ὁ αὐτ. π. Ζ. Μορ. 2. 4, 6· ἐπὶ φυτῶν ἢ λαχάνων, φλοιός, φύλον Θεοφρ. π. Φυτ. Ἱστ. 3. 12, 1 καὶ 5.