nyth cwhwrw

== Welsh == === Alternative forms === nyth gwhwrw === Noun === nyth cwhwrw f (plural nythod cwhwrw, not mutable) mare's nest (an illusory discovery or hoax) ==== Derived terms ==== chwilio am nyth cwhwrw (“to go on a wild goose chase”, literally “to search for a nyth cwhwrw”) === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “nyth cwhwrw”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies