cosiad

== Welsh == === Etymology === From cosi (“to itch, to beat”) +‎ -ad. === Noun === cosiad m (plural cosiadau) an itch Synonym: cosfa === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “cosiad”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies