五音

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, 齿音 chǐyīn, 唇音 chúnyīn

Character by character

• 五(wǔ)five
• 音(yīn)sound