Ruddy woman's covered in blubber! (6)
I believe the answer is:
cherry
'ruddy' is the definition.
(thesaurus)
'woman's covered in blubber' is the wordplay.
'woman' becomes 'her' (**).
'covered in' indicates putting letters inside.
'blubber' becomes 'cry' (I've seen this before).
'her' going within 'cry' is 'CHERRY'.
(Other definitions for cherry that I've seen before include "Virginity (slang)" , "Deep red like small round fruit" , ""Loveliest of trees, the ____ now" (Housman)" , "Red fruit with a single hard stone" , "Tree; red fruit" .)