big; large; great; vast; high in scale or intensity; (of a person) old; adult

key on a keyboard, piano, mouse, or electronic device; button

(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