哼声 Traditional form: 哼聲 Pinyin (reading): hēngshēng Definitions: hum Characters: 哼 - to hum; to sing softly; to moan, to groan 声 - sound, noise; voice, tone, music Traditional characters: 哼 - to hum; to sing softly; to moan, to groan 聲 - sound, noise; voice, tone, music