Bag supplied by fit patient, for example (8)
I believe the answer is:
suitcase
'bag' is the definition.
('suitcase' can be a synonym of 'bag')
'fit patient for example' is the wordplay.
'fit' becomes 'suit' ('suit' can be a synonym of 'fit').
'patient for example' becomes 'case'.
'suit'+'case'='SUITCASE'
'supplied by' is the link.
(Other definitions for suitcase that I've seen before include "Form of luggage" , "Type of holdall" , "that traveller may take" , "Travelling bag" , "A bit of baggage" .)