Long cushion giving help (7)
I believe the answer is:
bolster
This clue might be a double definition.
'long cushion' is the first definition.
'bolster' can be an answer for 'cushion' (bolster is a kind of cushion). I'm not sure about the 'long' bit.
'help' is the second definition.
(thesaurus)
'giving' is the link.
Can you help me to learn more?
(Other definitions for bolster that I've seen before include "Hold up" , "Lobster (anag.)" , "Chisel - long cushion" , "support for head after retiring" , "Extended pillow" .)