covering

1. A lid.
2. Area or situation which screens a person or thing from view.
3. The front and back of a book, magazine, CD package, etc.
4. The top sheet of a bed.
5. A cloth or similar material, often fitted, placed over an item such as a car or sofa or food to protect it from dust, rain, insects, etc. when not being used.
6. A cover charge.
7. A setting at a restaurant table or formal dinner.
8. A new performance or rerecording of a previously recorded song; a cover version; a cover song.
9. A fielding position on the off side, between point and mid off, about 30° forward of square; a fielder in this position.
10. A collection (or family) of subsets of a given set, whose union contains every element of said original set.
11. An envelope complete with stamps and postmarks etc.
12. A solid object, including terrain, that provides protection from enemy fire.
13. In commercial law, a buyer’s purchase on the open market of goods similar or identical to the goods contracted for after a seller has breached a contract of sale by failure to deliver the goods contracted for.
14. An insurance contract; coverage by an insurance contract.
15. A persona maintained by a spy or undercover operative; cover story.
16. A swindler's confederate.
17. The portion of a slate, tile, or shingle that is hidden by the overlap of the course above.
18. In a steam engine, the lap of a slide valve.
19. The distance between reinforcing steel and the exterior of concrete.