wǔyīn

five notes of pentatonic scale, roughly do, re, mi, sol, la / five classes of initial consonants of Chinese phonetics, namely: [[喉音<hóuyīn>]], [[牙音<yáyīn>]], [[舌音<shéyīn>]], [[齒音|齿音<chǐyīn>]], [[唇音<chúnyīn>]]