心音

Noun

 * 1)  heart sound; cardiac sound

Noun

 * 1) (the sound of one's) heartbeat

Etymology
This word is attested three times in Seok Hwaeomgyo Bun'gi (석화염교분기 / 釋華嚴敎分記), a Korean-language gloss from c. 960 of a seventh-century text, and seventeen times in a twelfth-century gloss of the . It is also found in the first-millennium  poems, both in isolation and in forms attached to a locative or genitive suffix, e.g..

Noun

 * 1) mind