scrambler

noun4

1. •
   Someone or something that scrambles (in various senses).

   • May it comfort us latter-day scramblers up that fine old mountain to know that Le Conte found it "difficult and fatiguing in the extreme." — 1984
2. •
   A vine that does not attach itself to its supports.
3. •
   A device that makes messages intentionally, but reversibly, unintelligible for reasons of privacy or security.

   • In the movies spies are always talking over cell phones with built-in scramblers.
4. •
   A motorcycle used for motocross.