|1.||any teleost fish of the order Apodes (or Anguilliformes), such as the European freshwater species Anguilla anguilla, having a long snakelike body, a smooth slimy skin, and reduced fins|
|2.||any of various other animals with a long body and smooth skin, such as the mud eel and the electric eel|
|3.||an evasive or untrustworthy person|
|[Old English ǣl; related to Old Frisian ēl, Old Norse āll, Old High German āl]|
see slippery as an eel.