'Eel' definitions:

Definition of 'eel'

From: WordNet
noun
The fatty flesh of eel; an elongate fish found in fresh water in Europe and America; large eels are usually smoked or pickled
noun
Voracious snakelike marine or freshwater fishes with smooth slimy usually scaleless skin and having a continuous vertical fin but no ventral fins

Definition of 'Eel'

From: GCIDE
  • Eel \Eel\, n. [AS. ?l; akin to D., G., & Dan. aal, Icel. [=a]ll, Sw. [*a]l.] (Zo["o]l.) An elongated fish of many genera and species. The common eels of Europe and America belong to the genus Anguilla. The electrical eel is a species of Gymnotus. The so called vinegar eel is a minute nematode worm. See Conger eel, Electric eel, and Gymnotus. [1913 Webster]