The Collaborative International Dictionary of English v.0.48:

Agnomination \Ag*nom`i*na"tion\, n. [L. agnominatio. See
   Agnomen.]
   1. A surname. [R.] --Minsheu.
      [1913 Webster]

   2. Paronomasia; also, alliteration; annomination.
      [1913 Webster]