noun
concha
Anatomical term for a shell-shaped structure, especially in the ear (耳甲介) or nose (鼻甲介). Rarely used alone; almost always appears in compound terms.
耳甲介は外耳の一部で、音を集める役割がある。
The concha is part of the outer ear and plays a role in collecting sound.
鼻甲介の腫れが鼻づまりの原因になることがある。
Swelling of the nasal concha can cause nasal congestion.