June 2006, V5#6: Define Friday, Jan 30 2009 

Trim Edge (or Margin – also “Fore Edge”): The edge of the page (leaf) or a board opposite from but parallel to, its binding edge (i.e., opposite from its binding edge).

August 2005, V4#8: Define Thursday, Jan 29 2009 

Bleed: A printed image that extends beyond the trim edge of a sheet of paper.