one of the eight categories of musical instruments (八音 bā​yīn), such as the 柷 zhù and 敔 yǔ

(bound form) a general name for musical instruments, especially stringed ones like the 钢琴 gāng​qín, 提琴 tí​qín, or 胡琴 hú​qín; also used for certain keyboard and reed instruments