What does the word covering mean?

Usage examples for covering

  1. You " thought they would not freeze," is not half as good as spending two hours' time in covering, so that you know they can not freeze. – Soil Culture by J. H. Walden
  2. With this covering of paint, wood will last practically forever, and as lumber is expensive, it is greater economy to keep your house properly painted. – Remodeled Farmhouses by Mary H. Northend
  3. And he pulled up the covering, and looked under it. – Frank, the Young Naturalist by Harry Castlemon