Where to find third man to duel if ill (8)
I believe the answer is:
outfield
'where to find third man' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'to duel if ill' is the wordplay.
'ill' indicates an anagram.
'to'+'duel'+'if'='toduelif'
'toduelif' anagrammed gives 'OUTFIELD'.
Can you help me to learn more?
(Other definitions for outfield that I've seen before include "Distant region of cricket ground" , "Area furthest from the stumps" , "Area away from the wicket" , "Part of pitch furthest from wicket" .)