Correct spelling for the English word "braud" is [bɹˈɔːd], [bɹˈɔːd], [b_ɹ_ˈɔː_d] (IPA phonetic alphabet).
There is no widely recognized word "braud" in English. It's possible that you may have misspelled or misheard the word. However, if you are referring to the word "broad", the etymology can be traced back to Middle English.
The word "broad" originated from the Old English word "brad", meaning wide or spacious. In Middle English, it evolved into "brod" before settling on the modern spelling, "broad". The term has remained relatively consistent in its meaning of something wide or extensive.