A word noted in mining records. According to west Yorkshire correspondents to the EDD this was to withdraw the timber supports of the roof when all the coal had been won.
This has been said to refer to an enclosed wain, one with sides (DW288) but I believe that it was a wain with iron-bound wheels, and that possibility is discussed fully under iron-bound wain.
Some 'boxmakers' were actually box-iron makers but the making of metal boxes, for a variety of other purposes, became a specialist craft in Sheffield in the late years of the seventeenth century.
As a noun this was a toothed instrument used in the preparation of flax and hemp. However, the same word was used for other craft instruments (OED) so the meaning is not always clear.