#5815 PTB *r-ŋa-p MOW / CUT / REAP (provisional)

Note that for “mow”, Jäschke 1881 and Marrison 1967 cite the Written Tibetan root rṅa, i.e. rŋa, while Coblin 1986:111 cites rngap , i.e. rŋap. Jäschke also shows rṅab, i.e. rŋab for “mow”, but labels it as a “Western Tibetan” colloquial form.

We follow Coblin in treating rngap/b as possibly the more conservative Tibetan form, reflected in our PTB reconstruction by suffixed ‑*p. Whether this ‑*p can be traced back to Proto-ST and is the ultimate source of OC *‑t in this root, as Coblin suggests, or whether OC *‑t here arose independently in Chinese, is a matter for further research.