Only Abe churns out rubbish! (7)
I believe the answer is:
baloney
'rubbish' is the definition.
(I've seen this in another clue)
'only abe churns' is the wordplay.
'churns' indicates anagramming the letters (I've seen 'churning' mean this).
'only'+'abe'='onlyabe'
'onlyabe' is an anagram of 'BALONEY'.
'out' acts as a link.
(Other definitions for baloney that I've seen before include "deceptive talk" , "Tripe < , smoked sausage" , "foolish talk!" , "Nonsense; lean yob (anag)" , "rhubarb" .)