βραύκη
From LSJ
Δελφῖνα νήχεσθαι διδάσκεις: ἐπὶ τῶν ἐν ἐκείνοις τινὰ παιδοτριβούντων, ἐν οἷς ἤσκηται → Teaching dolphins to swim: is applied to those who are teaching something among people who are already well versed in it
English (LSJ)
= ἀκρίς, Hsch.: βραῦκος, = μικρὰ ἀκρίς (Cret.), AB223; cf. βρεῦκος. βραύλα· φθείρ, Hsch. βραῦλον· κοῖλον, Id. βραῦνα· κήλη, κύστις, ἐντεροκήλη, Id. βραυνία· κοιλώματα γῆς, Id. βραυῶσα· κεκραγυῖα, Id.