στομαλγία
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)
ἡ,
A soreness of the mouth, ibid.: metaph., mouth-plague, i.e. incessant chattering, Id.2.101.
German (Pape)
[Seite 947] ἡ, eigtl. Mundschmerz, übertr. Geschwätzigkeit, freches, zügelloses Reden, Poll. 2, 101.
