What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
A Welsh breed of sheep with a short fleece and a tan or grey face and legs; a sheep of this breed. Also Hill Radnor.
Mid 19th century. From Radnor, the name of a region in central Powys, east Wales (formerly the county of Radnorshire), where such sheep were originally bred.