Just your type of tree bark, if you know what I mean.

He saw a chunk of tree bark fly into the air.

And she'd always considered it as original as tree bark.

All other forms blend in well with tree bark upon which they rest during the day.

In this case, pay particular attention to tree bark as you make your selections.

He then is given a tree bark to "wash" with.

Keep the masses happy, I thought, even if they can eat tree bark.

The tree bark began to move, forming a face of wood.

To the left was the sound of coarse cloth against tree bark.

Long ago the material was animal skin or tree bark.