Feeble act of moving a piece of furniture (6,5)
I believe the answer is:
coffee table
'a piece of furniture' is the definition.
(coffee table is a kind of piece of furniture)
'feeble act of moving' is the wordplay.
'moving' indicates an anagram (letters are moved around).
'feeble'+'act'+'of'='feebleactof'
'feebleactof' anagrammed gives 'COFFEE-TABLE'.
(Other definitions for coffee table that I've seen before include "Cup supporter" , "Platform for drinks (or books?)" , "Low item of furniture" .)