noun one of the five arched processes of the shell around the jaws of a sea urchin.
2. auricula ·noun a genus of air-breathing mollusks mostly found near the sea, where the water is brackish.
3. auricula ·noun a species of primula, or primrose, called also, from the shape of its leaves, bear's-ear.
4. auricula ·noun a species of hirneola (h. auricula), a membranaceous fungus, called also auricula judae, or jew's-ear.