Noun

1. The solid part of the earth's surface
2. A rational motive for a belief or action
3. The loose soft material that makes up a large part of the land surface
4. A relation that provides the foundation for something
5. A position to be won or defended in battle (or as if in battle)
6. The part of a scene (or picture) that lies behind objects in the foreground
7. Material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)
8. A relatively homogeneous percept extending back of the figure on which attention is focused
9. A connection between an electrical device and a large conducting body, such as the earth (which is taken to be at zero voltage)
10. (art) the surface (as a wall or canvas) prepared to take the paint for a painting
11. The first or preliminary coat of paint or size applied to a surface

Verb

1. Fix firmly and stably
2. Confine or restrict to the ground
3. Place or put on the ground
4. Instruct someone in the fundamentals of a subject
5. Bring to the ground
6. Hit or reach the ground
7. Throw to the ground in order to stop play and avoid being tackled behind the line of scrimmage
8. Hit a groundball
9. Hit onto the ground
10. Cover with a primer; apply a primer to
11. Connect to a ground
12. Use as a basis for; found on
13. Press or grind with a crushing noise
14. Make a grating or grinding sound by rubbing together
15. Work hard
16. Dance by rotating the pelvis in an erotically suggestive way, often while in contact with one's partner such that the dancers' legs are interlaced
17. Reduce to small pieces or particles by pounding or abrading
18. Created by grinding
19. Shape or form by grinding