From Proto-Tai *truəᴬ. Cognate with Thai หัว (hǔua), Lao ຫົວ (hūa), Lü ᦷᦠ (ḣo), Tai Dam ꪬꪺ, Shan ႁူဝ် (hǒ), Ahom 𑜑𑜥 (huu), 𑜍𑜥 (ruu) or 𑜍𑜤𑜈𑜫 (ruw).
ᩉ᩠ᩅᩫ (hua)