Adjective

1. Not open or affording passage or access
2. (set theory) of an interval that contains both its endpoints
3. Not open
4. Used especially of mouth or eyes

Verb

1. Move so that an opening or passage is obstructed; make shut
2. Become closed
3. Cease to operate or cause to cease operating
4. Finish or terminate (meetings, speeches, etc.)
5. Come to a close
6. Complete a business deal, negotiation, or an agreement
7. Be priced or listed when trading stops
8. Engage at close quarters
9. Cause a window or an application to disappear on a computer desktop
10. Change one's body stance so that the forward shoulder and foot are closer to the intended point of impact
11. Come together, as if in an embrace
12. Draw near
13. Bring together all the elements or parts of
14. Bar access to
15. Fill or stop up
16. Unite or bring into contact or bring together the edges of
17. Finish a game in baseball by protecting a lead