five notes of pentatonic scale, roughly do, re, mi, sol, la; five classes of initial consonants of Chinese phonetics, namely: 喉音 (hóu yīn), 牙音 (yá yīn), 舌音 (shé yīn), 齿音 (chǐ yīn), 唇音 (chún yīn)
Meaning
wǔyīnwu3 yin1
five notes of pentatonic scale, roughly do, re, mi, sol, la
five classes of initial consonants of Chinese phonetics, namely: 喉音hóu yīn, 牙音yá yīn, 舌音shé yīn, 齿音chǐ yīn, 唇音chún yīn