GNU Collaborative International Dictionary of English

Found one definition

1.       
   Scrim (?), n.
   1. A kind of light cotton or linen fabric, often woven in openwork patterns, -- used for curtains, etc,; -- called also India scrim.
   
   [1913 Webster]
   
   
   2. pl. Thin canvas glued on the inside of panels to prevent shrinking, checking, etc.
   
   [1913 Webster]