Save Type Surname Usage Lao Scripts ສີວົງໄຊ(Lao) Pronounced Pron. /sĭː.wóŋ.ˈsái/ [key·simplify] Meaning & History From Lao ສີ (si) meaning "splendour, brilliance, glory", ວົງ (vong) meaning "lineage, family" and ໄຊ (xay) meaning "victory".