from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any member of the Anguillidae.
from The Century Dictionary and Cyclopedia
- n. A fish of the family Anguillidæ, as an eel.
Sorry, no etymologies found.
In fact, the population of the Japanese eels, along with the population of anguillid eels (fresh water eels) worldwide, have declined drastically in recent years (via Wikipedia).