Proto-Viet-Muong:
Meaning: maternal grandfather
Proto-Ruc: *ta.1
Ruc (Russian field rec.): ta:.1
Ruc (Lo'i's rec.): ta:.1
Ruc (Ferlus' rec.): ta:.1
Ruc meaning: maternal grandfather
Thavung-So: ta:C.1
Thavung-So meaning: elderly man (addr.t.)
References: NTF29, NVL154
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