trothwy

== Welsh == === Noun === trothwy m (plural trothwyau or trothwyon) threshold, doorstep Synonyms: rhiniog, carreg drws (figurative) threshold, verge ==== Derived terms ==== ar drothwy (“on the verge”) === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “trothwy”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies