The Collaborative International Dictionary of English v.0.48:

Objurgation \Ob`jur*ga"tion\, n. [L. objurgatio: cf. F.
   objurgation.]
   The act of objurgating; reproof.
   [1913 Webster]

         While the good lady was bestowing this objurgation on
         Mr. Ben Allen.                           --Dickens.
   [1913 Webster]

         With a strong objurgation of the elbow in his ribs.
                                                  --Landor.
   [1913 Webster]

WordNet (r) 3.0 (2006):

objurgation
    n 1: rebuking a person harshly [syn: chiding, scolding,
         objurgation, tongue-lashing]