A document or estreat giving notice of a fine, amercement, etc., delivered by the Exchequer and bearing a green wax seal; such documents regarded collectively; (in extended use) the office issuing them. Also in "process (also amerciament, issue) of green wax". Compare "green cloth". Now historical.
Origin
Middle English. From green + wax.
Definition of green wax in US English:
green wax
nounˈɡriːn ˌwaks
A document or estreat giving notice of a fine, amercement, etc., delivered by the Exchequer and bearing a green wax seal; such documents regarded collectively; (in extended use) the office issuing them. Also in "process (also amerciament, issue) of green wax". Compare "green cloth". Now historical.