Wordnet 3.0
NOUN (1)
1. 
 a torturer who flogs or scourges (especially an official whose duty is to whip offenders); 
[syn: flogger, scourger]
The Collaborative International Dictionary of English v.0.48:
Flogger \Flog"ger\, n.
   1. One who flogs.
      [1913 Webster]
   2. A kind of mallet for beating the bung stave of a cask to
      start the bung. --Knight.
      [1913 Webster]
WordNet (r) 3.0 (2006):
flogger
    n 1: a torturer who flogs or scourges (especially an official
         whose duty is to whip offenders) [syn: flogger,
         scourger]