Proto-Sino-Tibetan: *ʔĕk ( ~ q(h)-)
Meaning: split, open
Burmese: ak to crack open.
Lushai: ek (eʔ) split or cleave (as wood).
Lepcha: ók to open (as door, mouth)
Comments: Bunan ag mouth. Ben. 36. Cf. Yamphu okma 'open, pull apart'.
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