'Shēn hào' is a literary and emotionally intense verb meaning 'to wail' or 'to cry out in anguish.' It combines two characters: 呻 (shēn), which means 'to groan'—often from physical pain or deep distress—and 号 (hào), meaning 'to cry aloud' or 'to howl,' especially with prolonged, unrestrained vocalization. Together, they evoke a raw, involuntary sound expressing extreme suffering, grief, or despair—not casual crying, but the kind heard in moments of profound loss, injury, or trauma.

This word appears frequently in formal writing, classical poetry, historical narratives, and dramatic descriptions. It carries strong connotations of helplessness and visceral emotion, and is rarely used in everyday spoken Chinese. While it can describe human suffering, it's also commonly applied to animals in distress—such as a wounded deer or trapped bird—to heighten pathos and evoke empathy through sound imagery.