Force almost recycled rubbish (7)
I believe the answer is:
flotsam
'rubbish' is the definition.
(thesaurus)
'force almost recycled' is the wordplay.
'force' becomes 'f' (symbol used in Physics e.g. f=ma).
'recycled' indicates an anagram.
'almost' anagrammed gives 'lotsam'.
'f'+'lotsam'='FLOTSAM'
(Other definitions for flotsam that I've seen before include "Wreckage adrift at sea" , "Detritus" , "Rubbish on sea" , "Shipwreck goods floating" , "Wreckage found floating" .)