This section is from the "A Complete Dictionary of Dry Goods" book, by George S. Cole. Also available from Amazon: A complete dictionary of dry goods and history of silk, cotton, linen, wool and other fibrous substances,: Including a full explanation of the modern processes ... together with various useful tables.
Milled Cloth. Cloth which has been thickened and shrunk in a fulling mill, until it is fulled or felted. Double-milled cloth describes those sorts which have been twice milled to give them increased thickness. [See Fulling]