llygad cath

== Welsh == === Etymology === Literally, “cat's eye”. === Noun === llygad cath f (plural llygaid cathod) (road transport, often in the plural) cat's eye (retroreflective stud on a road) === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “llygad”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies