noun
auditory ossicles
Anatomical term for the three small bones in the middle ear: hammer, anvil, and stirrup.
耳小骨は音を内耳に伝える役割をしている。
The auditory ossicles transmit sound to the inner ear.
内耳 is the inner ear, which receives vibrations from the auditory ossicles.
Compound of 耳 (ear) + 小 (small) + 骨 (bone), literally 'small ear bones'.