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
βλωμός, βῶλος, διάρρηγμα, διακοπή, δρέμμα, ἀγή, ἀποκάταγμα, ἀποτομή, ἀπόδραγμα, ἀπόθρισμα, ἀπόσπασμα, ἀπότμημα, ἔαγμα
