Material for a doctor to limit pain, mostly (7)
I believe the answer is:
cambric
'material' is the definition.
(cambric is a kind of material)
'a doctor to limit pain mostly' is the wordplay.
I cannot quite understand how this works, but
'a' is within the answer.
'doctor' could be 'mb' (Bachelor of Medicine, Medicinae Baccalaureus) and 'mb' is found within the answer.
This explanation may well be incorrect...
'for' is the link.
Can you help me to learn more?
(Other definitions for cambric that I've seen before include "Fine white fabric" , "Material" , "Lightweight cotton or linen cloth" , "Lightweight linen or cotton fabric" , "Thin linen or cotton cloth" .)