knäppa

verb

1. to button, to button up
2. to unbutton
3. to clasp, to buckle (some kind of locking mechanism)
4. to clasp (one's hands)
5. to unclasp, to unbuckle
6. to close (a zipper)
7. to open (a zipper)
8. to pop (make a faint, short, sharp sound)
9. to snap (one's fingers)
10. to strike with the fingers (making a sound), (for example) to pluck
11. to flick (away) (from the sound made)
12. to pop (shoot)
13. to snap, to shoot (a photograph)
14. to trigger some other mechanism with a trigger or button or the like
15. to crack (a nut)