Wart on the sole of the foot (7)
I believe the answer is:
verruca
'wart on the sole of the foot' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for verruca that I've seen before include "Wartlike growth often on foot" , "Wart on the sole of the foot" , "Kind of wart of foot" , "Wart-like swelling on the foot" , "Viral wart" .)