trwydded yrru

== Welsh == === Noun === trwydded yrru f (plural trwyddedau gyrru) driver's license ==== Related terms ==== prawf gyrru (“driving test”) === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “trwydded yrru”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies