Proto-Sino-Caucasian: *Hrā́j[c]ū
Meaning: plough
Comments and references : DCE 17. The parallel is striking, but the Bur. word seems to be derived from har-́ `to plough', the reflexes of which are not attested elsewhere; whether it is in any way related to har `bull, ox' is also unclear (it may be = PEC *χ_[ǝ]rV `ewe, ram').