Rock star bedding very old model (4)
I believe the answer is:
stun
'rock' is the definition.
(I've seen this in another clue)
'star bedding very old model' is the wordplay.
I cannot quite see how this works, but
'model' could be 't' (Ford Model T car) and 't' is found within the answer.
'star' could be 'sun' (the Sun is a star) and 'sun' is found within the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for stun that I've seen before include "Surprise greatly or daze" , "floor" , "Take aback" , "Concuss; amaze" , "Stagger, amaze" .)