Source : Webster's Revised Unabridged Dictionary (1913)

Flagellation \Flag`el*la"tion\, n. [L. flagellatio: cf. F.
   flagellation.]
   A beating or flogging; a whipping; a scourging. --Garth.

Source : WordNet®

flagellation
     n : beating with a whip or strap or rope as a form of punishment
         [syn: {whipping}, {tanning}, {flogging}, {lashing}]