Hello, you have come here looking for the meaning of the word bréin. In DICTIOUS you will not only get to know all the dictionary meanings for the word bréin, but we will also tell you about its etymology, its characteristics and you will know how to say bréin in singular and plural. Everything you need to know about the word bréin you have here. The definition of the word bréin will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofbréin, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.