a town of Belgium, in the province of Hainault, on the Senne, 9 miles N. of Mons, on the road from that town to Brussels. The church of St Vincent in this town was built in the tenth century, and still retains portions of the original fabric. The houses of Soignies are, for the most part, well and regularly built. There are a town-hall, two hospitals, an alms-house, and several schools. Beer, spirits, leather and soap, are made here; limestone is extensively quarried in the vicinity, and a considerable trade is carried on in it and in chalk. Pop. 6727. The forest of Soignies lies between Brussels and Waterloo, and is 15 miles in length by 6 in breadth.