From Proto-Tai *prakᴰ (“vegetable”). Cognate with Thai ผัก (pàk), Northern Thai ᨹᩢ᩠ᨠ, Lao ຜັກ (phak), Lü ᦕᧅ (ṗhak), Shan ၽၵ်း (phák), Ahom 𑜇𑜀𑜫 (phak), Zhuang byaek, Bouyei byagt, Saek พรั๊ก.
ᥚᥐᥴ (phák) (1963 orthography ᥚᥐ́)