The Collaborative International Dictionary of English v.0.48:

Razure \Ra"zure\ (r[=a]"zh[-u]r; 135), n. [See Rasure.]
   1. The act of erasing or effacing, or the state of being
      effaced; obliteration. See Rasure.
      [1913 Webster]

   2. An erasure; a change made by erasing.
      [1913 Webster]