Noun

1. A natural object that covers or envelops
2. An artifact that covers something else (usually to protect or shelter or conceal it)
3. The act of concealing the existence of something by obstructing the view of it
4. The act of protecting something by covering it
5. The work of applying something

Verb

1. Provide with a covering or cause to be covered
2. Form a cover over
3. Span an interval of distance, space or time
4. Provide for
5. Act on verbally or in some form of artistic expression
6. Include in scope; include as part of something broader; have as one's sphere or territory
7. Travel across or pass over
8. Be responsible for reporting the details of, as in journalism
9. Hold within range of an aimed firearm
10. To take an action to protect against future problems
11. Hide from view or knowledge
12. Protect or defend (a position in a game)
13. Maintain a check on; especially by patrolling
14. Protect by insurance
15. Make up for shortcomings or a feeling of inferiority by exaggerating good qualities
16. Invest with a large or excessive amount of something
17. Help out by taking someone's place and temporarily assuming his responsibilities
18. Be sufficient to meet, defray, or offset the charge or cost of
19. Spread over a surface to conceal or protect
20. Cover as if with a shroud
21. Copulate with a female, used especially of horses
22. Put something on top of something else
23. Play a higher card than the one previously played
24. Be responsible for guarding an opponent in a game
25. Sit on (eggs)
26. Clothe, as if for protection from the elements