γλυκύκρεος
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)
ον, of sweet flesh, κογχύλιον Sophr. 24.
Spanish (DGE)
(γλῠκύκρεος) -ον de carne dulce κογχύλιον Sophr.32.