pennog coch

== Welsh == === Etymology === Literally, “red herring”, see also cochi (“to smoke, to scorch”). === Noun === pennog coch m (plural penwaig coch or penwaig cochion) kipper ==== Usage notes ==== Not used for a red herring in the idiomatic sense. For this, see ysgyfarnog (literally “hare”). === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “pennog coch”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies