Wood-burning unit

• Where wood is burned
• Wood-residue factory

Wiktionary Word definitions in Wiktionary
n. 1 A depository for ashes. 2 A place where potash is made.

Wikipedia Word definitions in Wikipedia
An ashery is a factory that converts hardwood ashes into lye , potash , or pearlash . Asheries were common in newly settled areas of North America during the late 18th century and much of the 19th century, when excess wood was available as settlers cleared ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ashery \Ash"er*y\, n. A depository for ashes. A place where potash is made.