One of those Norfolk girls? (5)
I believe the answer is:
broad
'one' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'of those norfolk girls?' is the wordplay.
I cannot quite see how this works, but
'of' could be 'o' and 'o' is found in the answer.
The remaining letters 'brad' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for broad that I've seen before include "East Anglian waterway" , "dame" , "Without detail; wide" , "not detailed" , "Offspring" .)