五音

wǔyīn
  1. five notes of pentatonic scale, roughly do, re, mi, sol, la
  2. five classes of initial consonants of Chinese phonetics, namely: 喉音 hóuyīn, 牙音 yáyīn, 舌音 shéyīn, 齒音 chǐyīn, 唇音 chúnyīn

CEDICT

Entry Composition

1 五 wǔ
  1. five
  2. 5
2 音 yīn
  1. sound
  2. noise
  3. note (of musical scale)
  4. tone
  5. news
  6. syllable
  7. reading (phonetic value of a character)