Disney mermaid (5)
I believe the answer is:
ariel
'disney mermaid' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ariel that I've seen before include "An airy spirit (Tempest)" , "Shakespearean role" , "Angel" , "Shakespearean spirit" , "Would 'e rail against the spirit in The Tempest?" .)