Arête, a thin ridge of rock that is formed by glaciers.

Wind and water had etched thin ridges into its face.

This species can be identified by the thin black and white ridges that run longitudinally down its back.

A thin ridge is present beneath each eye, and a tiny spiracle behind.

It has steep south facing cliffs, the summit area being the highest point on a thin ridge.

She raised his hand and ran her mouth over the scar that had healed to a thin ridge.

Beneath the eye is a thin ridge, and behind is a tiny spiracle.

An individual, by the nature of their work or age, may have very thin or worn ridges in the pattern area.

The warts are connected by thin ridges in an incomplete network.

Below each eye is a thin ridge, and behind is a tiny spiracle.