Component of not-so-ordinary reversible bed (5)
I believe the answer is:
roost
'bed' is the definition.
(I've seen this before)
'component of not-so-ordinary reversible' is the wordplay.
'component of' indicates a hidden word (I've seen this in other clues).
'reversible' says the letters should be written backwards.
'tsoor' can be found hidden inside 'not so ordinary'.
'tsoor' back-to-front is 'ROOST'.
(Other definitions for roost that I've seen before include "Bird's night spot" , "bed" , "residence" , "Perch for a sleeping bird" , "Place where birds rest" .)