χάρυβδις
From LSJ
Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
English (LSJ)
[ᾰ], εως, Ion. ιος, ἡ,
A Charybdis, a whirlpool on the coast of Sicily, opposite Scylla, Od.12.104, E.Tr.436, Th.4.24, Str.6.2. 3. 2 generally, whirlpool, gulf, πάντα μίαν ἱκνεῖται χ. Simon.38, cf. E.Supp.500, Str.6.2.9. 3 metaph. of a rapacious person, χ. ἁρπαγῆς Ar.Eq.248 (troch.).
Russian (Dvoretsky)
χάρυβδις: εως (ᾰ) ἡ водоворот, пучина Eur.