Cut corns developing around base of toe (6)
I believe the answer is:
censor
'cut' is the definition.
(thesaurus)
'corns developing around base of toe' is the wordplay.
'developing' indicates an anagram.
'around' indicates putting letters inside.
'base of' indicates one should take the final letters.
The last letter of 'toe' is 'e'.
'corns' anagrammed gives 'cnsor'.
'cnsor' enclosing 'e' is 'CENSOR'.
(Other definitions for censor that I've seen before include "Expurgate" , "Roman magistrate" , "Blue-pencilling official" , "State official who vets books etc for crones" , "Suppress (information)" .)