She was terrified of a piece of empty brown material.

One state health report noted "dried brown material" on bathroom walls.

The trick to making a compost pile successful is having a balance of green and brown materials.

If you are good, there may be brown material!

Kirk was wearing a similar suit, but made of a light brown material.

The car was in a tent of unlikely brown flexible material.

A plate sat on the table, and the cup next to it contained a dried-out brown material.

Cement is a brown or grey material that keeps other materials together.

The result of that effort was two new materials, one brown and one green.

The monk's robe he wore was of coarse brown material.