Noun

1. Your basis for belief or disbelief; knowledge on which to base belief
2. The enclosed land around a house or other building
3. A tract of land cleared for some special purposes (recreation or burial etc.)
4. A justification for something existing or happening
5. Dregs consisting of solid particles (especially of coffee) that form a residue
6. The solid part of the earth's surface
7. A rational motive for a belief or action
8. The loose soft material that makes up a large part of the land surface
9. A relation that provides the foundation for something
10. A position to be won or defended in battle (or as if in battle)
11. The part of a scene (or picture) that lies behind objects in the foreground
12. Material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)
13. A relatively homogeneous percept extending back of the figure on which attention is focused
14. A connection between an electrical device and a large conducting body, such as the earth (which is taken to be at zero voltage)
15. (art) the surface (as a wall or canvas) prepared to take the paint for a painting
16. 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