The trunk is straight with dark grey or brown outer bark.

The outer bark on trees is also called the rhytidome.

A few are naturally hollow, although the outer bark in most parts is up to eight meters thick.

They belonged to the rough outer bark of the spreading westward tree.

He hesitated, ready to set the blade to the outer bark of the tree.

The outer bark is silvery grey and thin, with small pustules.

Cork is the lightweight outer bark of a tree commonly grown around the Mediterranean.

Under the protective outer bark lies another layer of protection, the phellogen.

The outer bark is dark brown with pustules, somewhat wrinkled in older trees.

With a sharp knife, scrape away a small section of outer bark low on the plant's stem.