Escape artist of similes (3)
I believe the answer is:
eel
'escape artist of similes' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eel that I've seen before include "Slimy fish" , "Slippery creature" , "Fish in the Lee?" , "Proverbially slippery fish" , "Slender fish" .)