Source : Webster's Revised Unabridged Dictionary (1913)

Reaper \Reap"er\, n.
   1. One who reaps.

            The sun-burned reapers wiping their foreheads.
                                                  --Macaulay.

   2. A reaping machine.

Source : WordNet®

reaper
     n 1: someone who helps to gather the harvest [syn: {harvester}]
     2: Death personified as an old man or a skeleton with a scythe
        [syn: {Grim Reaper}]
     3: farm machine that gathers a food crop from the fields [syn:
        {harvester}]

Source : Free On-Line Dictionary of Computing

reaper
     
        A {prowler} that {GFR}s files.  A file removed in this way is
        said to have been "reaped".
     
        [{Jargon File}]