MZENSK, a town of Russia, in the government of Orel, is situated at the confluence of the Mzena and the Zoucha, 35 miles N.N.E. of Orel. It is pretty well built, but principally of wood; and has twelve churches and two convents. There is a considerable trade here in corn and hemp, which are grown in the neighbourhood. Pop. (1851) 12,775.