blue-pencil

from WordNet (r) 3.0 (2006)

blue-pencil
    v 1: cut or eliminate; "she edited the juiciest scenes" [syn:
         {edit}, {blue-pencil}, {delete}]

from The Collaborative International Dictionary of English v.0.48

Bluenoser \Blue"nos`er\); a Nova Scotian potato, etc.
   [Webster 1913 Suppl.] blue-pencil \blue-pencil\ v. t.
   to change, delete, or abridge (a portion of a text) with a
   blue pencil (or as if with a blue pencil), as in the editing
   process; -- of books, etc.
   [WordNet 1.5 +PJC]