Correct spelling for the English word "barrer" is [bˈaɹə], [bˈaɹə], [b_ˈa_ɹ_ə] (IPA phonetic alphabet).
The word "barrer" comes from the Old French verb "barrir", which means "to close or bar with a gate or barrier". This Old French term is derived from the Vulgar Latin word "barrīre", coming from the Late Latin "barrīcāre", meaning "to barricade" or "to block with a barrier". Ultimately, the word can be traced back to the Proto-Germanic root *bariz, which means "bar" or "beam".