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
ἀγριοστᾰφίς: -ίδος, ἡ ἀγρία σταφίς, Ὀρνεοσοφ., κτλ· οὕτω παρὰ Γραμμ., ἀγριοστᾰφύλη, -σταφύλινον, -σταφυλίς.
