True version has receptacle being a generator (7)
I believe the answer is:
turbine
'a generator' is the definition.
(thesaurus)
'true version has receptacle' is the wordplay.
'version' indicates anagramming the letters.
'has' indicates putting letters inside.
'receptacle' becomes 'bin' (I've seen this before).
'true' with letters rearranged gives 'ture'.
'ture' enclosing 'bin' is 'TURBINE'.
'being' is the link.
(Other definitions for turbine that I've seen before include "Fluid-driven motor" , "Engine driven by spinning blades" , "Power generator" , "Power-producing machine" , "Machine driven by tribune" .)