From Wiktionary, the free dictionary
From ហូរ (hou, “to flow”) with prefixed bVN- (causative).
បង្ហូរ • (bɑnghou) (abstract noun ការបង្ហូរ)
- to cause to flow
- to discharge a liquid
- to stream, gush
- to drain or empty water from an irrigated field
- to let animals run freely