What is the meaning of Eel?

Any freshwater fish of the order Anguilliformes, which are elongated and resemble snakes.

A European eel (Anguilla anguilla).

Someone or something that is sneaky and/or hard to catch.

To fish for eels.

To move with a sinuous motion like that of an eel.

adessive singular of esi

adessive singular of esi

Alternative form of el

to know, to have knowledge of

Source: wiktionary.org