gyriant pedair olwyn

== Welsh == === Etymology === Literally, “front drive”. === Noun === gyriant pedair olwyn m (plural gyriannau pedair olwyn) (vehicles) four-wheel drive ==== Coordinate terms ==== gyriant blaen (“front-wheel drive”) gyriant ôl (“rear-wheel drive”) === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “gyriant pedair olwyn”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies