brownstone definitions WordNet (r) 3.0 (2005) n 1: a reddish ... sandstone; used in buildings 2: a row house built of brownstone; reddish brown in color Merriam Webster's noun Date: 1846 ... brown sandstone used for building 2. a dwelling faced with brownstone Oxford Reference Dictionary n. US 1 a kind of reddish ... 2 a building faced with this. Webster's 1913 Dictionary Brownstone Brown"stone`, n. A dark variety of sandstone, much used ... Collin's Cobuild Dictionary (brownstones) In the United States, a brownstone is a type of house which was built during the ...