Lum·ber n.
 1. A pawnbroker's shop, or room for storing articles put in pawn; hence, a pledge, or pawn. [Obs.]
    They put all the little plate they had in the lumber, which is pawning it, till the ships came.   --Lady Murray.
 2. Old or refuse household stuff; things cumbrous, or bulky and useless, or of small value.
 3. Timber sawed or split into the form of beams, joists, boards, planks, staves, hoops, etc.; esp., that which is smaller than heavy timber. [U.S.]
 Lumber kiln, a room in which timber or lumber is dried by artificial heat. [U.S.]
 Lumber room, a room in which unused furniture or other lumber is kept. [U.S.]
 Lumber wagon, a heavy rough wagon, without springs, used for general farmwork, etc.
 dimensional lumber, lumber, usually of pine, which is sold as beams or planks having a specified nominal cross-section, usually in inches, such a two-by-four, two-by-six, four-by-four, etc.


 lumber room
      n : a storeroom in a house where odds and ends can be stored
          (especially furniture)