Sore swelling caused by poor Bill being shackled? (9)
I believe the answer is:
chilblain
'sore' is the definition.
(I know that chilblain is a type of blain)
'swelling caused by poor bill being shackled?' is the wordplay.
I cannot really understand how this works, but
an anagram of 'bill' is 'ilbl' which is present in the answer.
The remaining letters 'chain' 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 chilblain that I've seen before include "Inflammation from exposure to cold and moisture" , "Painful swelling on the skin brought on by cold" , "Painful swelling in winter" , "Painful swelling on hand or foot caused by cold" , "Inflamed sore" .)