Auricle (noun)

1. The external part of the ear that is visible on the head.
2. A small, ear-shaped projection on the atria of the heart that helps to move blood into the ventricles.

Origin:

The word auricle comes from the latin word "auricula" meaning "ear".

Examples:

1. He pierced his auricle to wear a small earring.
2. The auricle of the ear is the visible part of the ear on the head.
3. The auricle of the heart is a small, ear-shaped projection that helps to move blood into the ventricles.
4. The auricles of the heart are the small, ear-shaped projections on the atria.
5. The auricles of the ear are the visible parts of the ear on the head.