From Wiktionary, the free dictionary
From ធូរ (thuu, “soft; loose”) with prefixed bVN- (causative).
បន្ធូរ • (bɑnthuu) (abstract noun ការបន្ធូរ)
- to loosen (a belt)
- to let out air (of a tire / balloon)
- to ease, relax, make less tense
- to release
- to soften
- to indulge; to alleviate; to pacify, appease