Clean woman's home at iron court (9)
I believe the answer is:
disinfect
'clean' is the definition.
(disinfecting is a kind of cleaning)
'woman's home at iron court' is the wordplay.
'woman's' becomes 'di's' (short for Diana).
'home' becomes 'in' (to be in is to be (at) home).
'at' is a charade indicator (letters next to each other).
'iron' becomes 'fe' (Fe is the chemical symbol for iron).
'court' becomes 'ct' (abbreviation used in road names).
'dis'+'in'+'fe'+'ct'='DISINFECT'
(Other definitions for disinfect that I've seen before include "Sterilise" , "purge" , "Clean so as to destroy bacteria" , "get rid of bugs" , "Sanitise" .)