tonnell

== English == === Noun === tonnell (plural tonnells) Obsolete form of tunnel (“flue of a chimney”). == Welsh == === Etymology === From ton (“wave”) +‎ -ell (diminutive suffix). Calque of English wavelet. === Noun === tonnell f (plural tonellau) wavelet === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “tonnell”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies