lining

Etymology

noun

1. A covering for the inside surface of something.
   A canister of flour from the kitchen had been thrown at the looking-glass and lay like trampled snow over the remains of a decent blue suit with the lining ripped out which lay on top of the ruin of a plastic wardrobe. 1963, Margery Allingham, “Foreword”, in The China Governess
   As we age, the major arteries of our bodies frequently become thickened with plaque, a fatty material with an oatmeal-like consistency that builds up along the inner lining of blood vessels. 2013 July-August, Stephen P. Lownie, David M. Pelz, “Stents to Prevent Stroke”, in American Scientist
2. The material used for such a covering.
3. The act of attaching such a covering.

verb

1. present participle and gerund of line