hwylbrendy

== Welsh == === Etymology === hwylbren (“sail”) +‎ tŷ (“house”). === Noun === hwylbrendy m or f (plural hwylbrendai, not mutable) (nautical) masthouse === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “hwylbrendy”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies