Source : Webster's Revised Unabridged Dictionary (1913)

Rasure \Ra"sure\ (?; 135), n. [L. rasura, fr. radere, rasum, to
   scrape, to shave. See {Rase}, v.]
   1. The act of rasing, scraping, or erasing; erasure;
      obliteration.

   2. A mark by which a letter, word, or any part of a writing
      or print, is erased, effaced, or obliterated; an erasure.
      --Ayliffe.