Today’s word, twmpath (/tʊmpaθ/), is the Welsh word for a tump, hump, hummock, tussock or mound. It is also refers to a type of barn dance, which is sort of the Welsh equivalent of an Irish ceili.

The English word tump (a mound or hillock) might come from twmpath, though the dictionaries I’ve checked give it’s origin as unknown.

According to this site, there was a tradition in Wales for people gather on the twmpath chwarae (lit. “tump for playing”) or village green in the evenings to dance and play various sports, usually starting on May Day. A fiddler or harpist would sit and play on a mound in the middle of the green and people would dance around them.

Other uses of this word include twmpath gwadd, mole hill, and twmpath cyflymder or speed bump, a traffic calming measure sometimes called a ’sleeping policeman’ in English. What are such things called in your language?