Incorrect or unsuitable name (8)
I believe the answer is:
misnomer
'incorrect or unsuitable name' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for misnomer that I've seen before include "Wrong name or description" , "Unsuitable name for a person or thing" , "Unsuitable designation" , "the label's wrong" , "Simmer on (anag)" .)