駱越

Etymology
here results from the monosyllabification of the areal ethnonym *b.rak or *p.rak by loss of the first element in the iambic cluster; the same ethnonym is used by the Wa people, a Khmu subgroup and possibly the Bai, and may be the same as the first syllable in, later construed as meaning “hundred”.

links said phonograms to etymon *p.rak "taro > edible tuber" (Norquest (2020) reconstructs 🇨🇬), which is reflected in words like 🇨🇬 or 🇨🇬 (from 🇨🇬 in Ferlus's reconstruction or  in Pittayaporn's 2009 reconstruction); he proposes that the areal ethnonym *b.rak or *p.rak was used by rice growers to designate taro-growing horticulturists.

Proper noun

 * 1)   an ancient conglomeration of Yue tribes