Welsh Rabbit, also known as Welsh Rarebit, is a traditional British dish made with melted cheese and various other ingredients served on toast. It is believed to have originated in the 18th century and is still popular today. The term 'Welsh Rabbit' is thought to be a humorous reference to the fact that rabbits were a staple of the Welsh diet. The crossword solution for this term is 'RAREBIT', which is an alternate spelling of the dish.