Sentence:  By the time it had some of the dirt and grease removed (part scouring) it had become the creamy natural colour (<WSD>bainin</WSD>) with which we are all familiar, and although the patterns are worked in other fashion colours and yarns, the true Aran is only made from the thickish <WSD>bainin</WSD> woolen yarn. 
Meaning of the word marked with <WSD> tags:  the creamy white colour of such yarn or cloth