twll tin byd
Welsh
Etymology
Literally, “world's arsehole”.
Noun
- the arse end of nowhere, the back of beyond
Further reading
- R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “twll tin (din) byd”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies