Quick answer
Wu is a boy/girl name.
Meaning and history
From Chinese 武 ( wǔ ) meaning "military, martial" (which is generally only masculine) or 务 ( wù ) meaning "affairs, business", as well as other characters that are pronounced similarly. This was the name of several Chinese rulers, including the 2nd-century BC emperor Wu of Han (a posthumous name, spelled 武 ) who expanded the empire and made Confucianism the state philosophy.
Notes and context
Usage: chinese