From Proto-Tai *piːkᴰ (“wing”). Cognate with Thai ปีก (bpìik), Northern Thai ᨸᩦ᩠ᨠ, Lü ᦔᦲᧅᧈ (ṗiik¹), Tai Dam ꪜꪲꪀ, Shan ပိၵ်ႇ (pìk), Tai Nüa ᥙᥤᥐᥴ (pík), Aiton ပိက် (pik).
𑜆𑜢𑜀𑜫 (pik)