What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
Definition of Welsh Celtic in US English:
Welsh Celtic
noun
The Brittonic language of Wales; = "Cymraeg".
adjective
Designating the Brittonic language of Wales; of or in this language; = sense A. 4.
Origin
Late 18th century; earliest use found in John Pinkerton (1758–1826), historian and poet.
