astacus
From LSJ
συμπεφύκασι γὰρ αἱ ἀρεταὶ τῷ ζῆν ἡδέως (Epicurus' Letter to Menoeceus via Diogenes Laertius 10.132.10) → The virtues are part and parcel of the stress-free life
astăcus: i, m., = ἄστακος,
I a kind of crab, Plin. 9, 31, 51, § 97; cf. Isid. Orig. 12, 8, 9.
