Proto-Sino-Tibetan *p(r)ak ~ r-pak

→ Tibetan ཕྲག་པ (inherited)

→ Garo pakkre (inherited)

→ Garo pakkrong (inherited)

→ Jingpho hpa (inherited)

→ Jingpho lahpa (inherited)

→ Jingpho kahpa (inherited)

→ Burmese ပခုံး (mention)

→ Situ ta rpak (inherited)

→ Chinese 膊 (inherited)