Crossword Genius

Call something you shouldn't (7)

Ross

I believe the answer is:

misname

I'm a little stuck... Click here to teach me more about this clue!

'call' is the definition.
(I know that misname is a type of call)

I don't understand the remainder of the clue.

Can you help me to learn more?

I've seen this clue in the Evening Standard.
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