悲号 (bēiháo) is a literary and emotionally intense verb meaning 'to moan in sorrow' or 'to wail mournfully.' The first character 悲 (bēi) means 'sorrow' or 'grief,' while the second character 号 (háo) means 'to cry out loudly' — often with connotations of anguish, pain, or despair. Together, they form a compound that emphasizes vocalized, unrestrained grief, typically in response to profound loss, tragedy, or helplessness.

This word appears most often in written Chinese — in literature, historical accounts, poetry, or formal speech — rather than casual conversation. It carries strong emotional weight and may evoke imagery of someone collapsing in tears, calling out desperately, or lamenting aloud. While it can describe human mourning, it’s occasionally used metaphorically for natural phenomena (e.g., wind 'wailing') or even animals in poetic contexts, though its core domain is human emotional expression.