breacan
Breacan is a Scottish Gaelic word that translates to "speckled" or "mottled." It is often used in descriptions of natural phenomena, such as the appearance of certain animals or the patterns found in stones. For instance, a bird might be described as breacan if it has a coat of many different colored spots or patches. The term can also refer to a type of textile, particularly tartan, where the intersecting threads create a speckled effect in the weave.
In the context of heraldry, breacan can describe a pattern of alternating colors, similar to a chequerboard