ἔνυδρις
From LSJ
τοῖς οἰκείοις συκοφαντίαν δέδωκεν → has given to his friends an opportunity for chicane, has offered to his friends the right of vindictive prosecution
English (LSJ)
ἡ, gen. ιος, Hdt.: ἐνυδρίς, ίδος, Arist.HA594b31:—
A otter, Lutra vulgaris, Hdt.2.72, 4.109, Arist. l.c. II water-snake, Enhydris, Plin.HN32.82.