Adjustable armchair (8)
I believe the answer is:
recliner
'adjustable armchair' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for recliner that I've seen before include "Where one may lounge" , "Relax here" , "Lounger" , "Armchair whose back can be lowered and its foot raised" , "Chair in which to loll" .)