From Proto-Tai *ʔoːjꟲ (“sugar cane”). Cognate with Thai อ้อย (ɔ̂i), Lao ອ້ອຍ (ʼǭi), Zhuang oij.
ᦀᦾᧉ • (˙ʼoay²) (Tai Tham spelling ᩋᩭ᩶)