聴覚
ちょうかく · choukaku · JLPT N1 · noun
hearing
👂 聴 = listen + 覚 = sense, so 聴覚 is the sense of listening
聴 (chō) means listen, as in 視聴 (watching and listening). 覚 (kaku) means sense or awareness, as in 感覚 (sensation). Joined, they name the sense that perceives sound.