1. a small knob or disk secured to an article (as of clothing) and used as a fastener by passing it through a buttonhole or loop

2. a usually circular metal or plastic badge bearing a stamped design or printed slogan
campaign button

3. something that resembles a button: such as

4. any of various parts or growths of a plant or of an animal: such as

5. bud

6. an immature whole mushroom especially button mushroom

7. the terminal segment of a rattlesnake's rattle

8. a small globule of metal remaining after fusion (as in assaying)

9. a guard on the tip of a fencing foil

10. push button

11. something (such as a push button) that has the real or symbolic capability of initiating a catastrophe (such as a nuclear attack)
has his finger on the button

12. a hidden sensitivity that can be manipulated to produce a desired response
knows how to push my buttons

13. a usually box-shaped computer icon that initiates a specific software function

14. the point of the chin especially as a target for a knockout blow

15. exactly
arrived at noon on the button also exactly on target on the nose
the estimate was right on the button

16. to furnish or decorate with buttons

17. to pass (a button) through a buttonhole or loop

18. to close or fasten with buttons —often used with up
button up your overcoat

19. to close (the lips) to prevent speech
button your lip

20. to close or seal tightly —usually used with up
button up the house for winter

21. to have buttons for fastening
this dress buttons at the back

22. a small, usually round piece of plastic, glass, metal, etc., that is sewn to a piece of clothing and is pushed through a loop or hole to fasten one part of the clothing to another part

23. a small, usually round sign that has a picture or words on the front and a pin on the back

24. a small part of a machine that you push to make the machine work

25. to attach (a button) by passing it through a hole

26. to close or fasten (something) with buttons

27. to have buttons for fastening

28. a small ball or disk used for holding parts of a garment together or as an ornament

29. a small often round part of a machine that makes the machine do something when pushed

30. to close or fasten with buttons

31. something that resembles a small knob or disk: as

32. cotyledon sense 1