Definition of furring

• p. pr. & vb. n. - of Fur
• n. - The leveling of a surface, or the preparing of an air space, by means of strips of board or of larger pieces. See Fur, v. t., 3.
• v. t. - The strips thus laid on.
• v. t. - Double planking of a ship's side.
• v. t. - A deposit from water, as on the inside of a boiler; also, the operation of cleaning away this deposit.