(Especially with reference to 17th-cent. American architecture) a type of chimney typically made from woven branches or wooden slats and coated in clay mortar.
Origin
Mid 17th century.
Definition of Welsh chimney in US English:
Welsh chimney
noun
Architecture historical
(Especially with reference to 17th-cent. American architecture) a type of chimney typically made from woven branches or wooden slats and coated in clay mortar.