Proto-Sino-Tibetan: *χāk
Meaning: phlegm
Burmese: hak phlegm.
Lushai: hāk catch one's breath; swallow the wrong way, cf. also khak to try to eject forcibly from the throat, (Ben.) khāk phlegm.
Comments: Sgaw kǝhaʔ phlegm; Mikir tśiŋ khak expectorate, cough up; phlegm. Ben. 71, 133.