Dictionary.net

• In arch., roughly-constructed masonry, in which the surfaces of stones are left in a rough unhewn state nearly as they nearly as they came from the quarry.

1874 - Etymological and pronouncing dictionary of the English language
By Stormonth, James, Phelp, P. H.

• n. In architecture style in which the faces of the stones ate picked or hatched so as to give a natural rough appearance; rock-work.

1871 - The Cabinet Dictionary of the English Language