bwbach
"bogy, scarecrow." A Welsh household fairy which may be helpful or mischievous. It is a scold to teetotalers and dissenting ministers. The bwbach is best known in the three Glamorganshires.
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It is also a term used to describe a warrior as leader causing terror.
References
Source
- MacKillop, James. (2004). Dictionary of Celtic Mythology. New York: Oxford University Press, Inc.