The term MATERIAL FOR BRICKS can be answered by the 4-letter word CLAY. CLAY is a natural material that has been used for centuries to make bricks. It is composed of minerals, organic matter, and water, and is found in abundance in many parts of the world. CLAY is malleable when wet, making it easy to shape into bricks, and it hardens when fired in a kiln. CLAY bricks are durable and fire-resistant, making them an ideal building material.