Introduction

American Heritage Dictionary
n.

Clay

1. 1. A fine-grained, firm earthy material that is plastic when wet and hardens when heated, consisting primarily of hydrated silicates of aluminum and widely used in making bricks, tiles, and pottery.
   2. A hardening or nonhardening material having a consistency similar to clay and used for modeling.
2. Geology A sedimentary material with grains smaller than 0.002 millimeters in diameter.
3. Moist sticky earth; mud.
4. The human body as opposed to the spirit.