As worn by a hard-working girl? (7)
I believe the answer is:
sweater
'a hard-working girl?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'as worn by' is the wordplay.
I cannot really see how this works, but
'by' could be 'at' and 'at' is present in the answer.
The remaining letters 'sweer' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for sweater that I've seen before include "Woolly" , "Knitted upper garment" , "Guernsey" , "Long-sleeved pullover" , "Jersey may become" .)