ἄκνηστις
From LSJ
English (LSJ)
ιος, ἡ,
A spine or backbone of animals, Od.10.161 (nisi leg. κατὰ κνῆστιν), A.R.4.1403; also τὸ μέσον τῆς ὀσφύος Poll.2.179. II stinging-nettle, = ἀκαλήφη, Nic.Th.52 (other expl. ap. Sch. ad loc.).
German (Pape)
[Seite 75] εως, ἡ (vgl. ἄκανος, ἄκανθα), 1) Rückgrat von Thieren, Hom. Od. 10, 161 κατ' ἄκνηστιν μέσα νῶτα (ἅπαξ εἰρημ.); Scholl. ὅτι αὐτὸς ἐπεξηγεῖται τί ἐστιν ἄκνηστις διὰ τοῦ εἰπεῖν μέσα νῶτα (aus Aristonic.); – Ap. Rh. 4, 1402. – 2) Pflanze, Nic. Th. 52.