Pronunciation: (fûr'ing),[key] —n. 1. the act of lining, trimming, or clothing with fur: Furring this coat will take several weeks. 2. the fur used: What kind of furring would you like? 3. the formation of a coating of matter on something, as on the tongue: A heavy furring could mean a high fever. 4. Building Trades. a. the attaching of strips of wood or the like (fur'ring strips") to a wall or other surface, as to provide an even support for lath or to provide an air space between the wall and plasterwork.
b. material used for this purpose.