
The other day I noticed the word gwlau on a sign outside a furniture shop. It’s a Welsh word I hadn’t seen or heard before, but from the context I worked out that it meant ‘beds’. The sign also included the words gwlau soffa (sofa beds). As I hadn’t come across this plural form of gwely [ˈɡwɛlɨ/ˈɡweːli] (bed) before, I wondered if it was a mistake.
According to Geiriadur yr Academi and Geiriadur Prifysgol Cymru, the plural forms of gwely are gwelyau or gwlâu, so the words on the sign weren’t wrong, but were just missing a to bach (circumflex) on the a.
Gwely comes from the Proto-Celtic *uɸo-legyom from *legh (to lie down), from the Proto-Indo-European *upo (under, below) & *legʰ- (to lie (down)), and is cognate with the Cornish guely and the Breton gwele. *legʰ- is the root of the Irish luigh, the Manx lhie, and the Scottish Gaelic laigh (to lie (down)); and also the Italian letto and French lit (bed), via the Latin lectus (bed); the English lair, the German Lager (store, camp), and the Swedish läger (camp), as well as other words [source].


