Sister's daughter (5)

I believe the answer is:

niece

'sister's daughter' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for niece that I've seen before include "Family relation" , "Criminal" , "Brother or sister's daughter" , "Son's cousin" , "A sibling's daughter" .)

I've seen this clue in the USA Today, The Mirror, The Star Tribune, The Telegraph, the Universal and the Newsday.

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