padding

noun7

1. •
   Soft filling material used in cushions etc.
2. •
   Extra characters such as spaces added to a record to fill it out to a fixed length.
3. •
   Extraneous text added to a message for the purpose of concealing its beginning, ending, or length.
4. •
   Anything of little value used to fill up space.

   • That magazine is mostly advertisements; the rest is padding.
5. •
   A diaper.
6. •
   The process of mordanting a fabric.
7. •
   (no longer used) Robbing on a highway.