Ring woman in Paris entertained by filth (7)
I believe the answer is:
grommet
'ring' is the definition.
(protective ring used in electronics)
'woman in paris entertained by filth' is the wordplay.
'woman in paris' becomes 'mme' (I can't justify this - if you can you should believe this answer much more).
'entertained by' indicates putting letters inside (inserted letters are hosted or entertained).
'filth' becomes 'grot' (I've seen this before).
'mme' going within 'grot' is 'GROMMET'.
Can you help me to learn more?
(Other definitions for grommet that I've seen before include "Ring of rope or metal" , "Washer; eyelet" , "Eyelet in a sheet or panel" , "Metal ring for lining a small hole" , "Ring of rubber to line a hole and prevent chafing" .)