What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
Definition of marsh wren in US English:
marsh wren
noun
A wren of the genus Cistothorus, especially C. palustris, a North American wren of marshes and swamps.
Origin
Late 18th century; earliest use found in William Bartram (1739–1823), botanist and ornithologist.
