Bandage material (5)
'bandage material' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for gauze that I've seen before include "first-aid material" , "Thin transparent material" , "Thin bleached cotton cloth used for dressings etc" , "Medical dressing" , "Thin woven material used in bandages" .)
(Other definitions for lint that I've seen before include "Soft cloth for dressing wounds" , "Fabric for dressings" , "Fabric for dressing wounds" , "Soft material for dressing wounds" , "Wound-dressing fabric" .)