From Wiktionary, the free dictionary
Unknown.
барбах • (barbaq)
- insignificant, unimportant
барбах • (barbaq)
- just, only (compare English merely or simply)
- as if nothing had happened
барбах, табахтаан бусхата олорор- barbaq, tabaqtaan busqata oloror
- he just sits there smoking tobacco, as if nothing had happened
In the adverbial sense, this word is often set off by commas.