bugeilio'r brain

== Welsh == === Alternative forms === bugeilio brain === Etymology === Literally, “to herd the crows”. === Verb === bugeilio'r brain (first-person singular present bugeiliaf yr brain) to scare away crows (idiomatic) to herd cats (to attempt to do the impossible) === Further reading === D. G. Lewis, N. Lewis, editors (2005–present), “bugeilio”, in Gweiadur: the Welsh–English Dictionary, Gwerin R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “bugeilio brain”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies