Cockle maybe from south, all she’s flogged (8)
I believe the answer is:
seashell
'cockle maybe' is the definition.
(type of mollusc with a shell)
'south all she's flogged' is the wordplay.
'south' becomes 'se' (I can't justify this - if you can you should give a lot more credence to this answer).
'flogged' indicates anagramming the letters.
'all'+'she'='allshe'
'allshe' anagrammed gives 'ashell'.
'se'+'ashell'='SEASHELL'
'from' acts as a link.
(Other definitions for seashell that I've seen before include "home by the coast, perhaps" , "Case of mollusc" , "Hard remains of marine mollusc" , "scallop?" , "Empty covering of marine mollusc" .)