Lustreless lock of hair in part of bedding (8)
I believe the answer is:
mattress
'part of bedding' is the definition.
(I know that bedding has part or parts mattress)
'lustreless lock' is the wordplay.
'lustreless' becomes 'matt' (I've seen this before).
'lock' becomes 'ress' (I've seen this in another clue).
'matt'+'ress'='MATTRESS'
'of hair in' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for mattress that I've seen before include "Smartest kind of bed-base" , "Palliasse" , "Padded part of a bed" , "Pad to sleep on" , "Stuffed bag on which to sleep" .)