Source : Webster's Revised Unabridged Dictionary (1913)

Plumber \Plumb"er\, n. [F. plombier. See {Plumb}.]
   One who works in lead; esp., one who furnishes, fits, and
   repairs lead, iron, or glass pipes, and other apparatus for
   the conveyance of water, gas, or drainage in buildings.

Source : WordNet®

plumber
     n : a craftsman who installs and repairs pipes and fixtures and
         appliances [syn: {pipe fitter}]

Source : Free On-Line Dictionary of Computing

Plumber
     
         A system for obtaining information about
        {memory leaks} in {Ada} and {C} programs.
     
        {Home (http://home.earthlink.net/~owenomalley/plumber.html)}.
     
        (17 Feb 1999)