red devil

noun2

1. •
   (slang) A capsule of secobarbital sodium, especially when used as a recreational drug.

   • Police said they acted on a tip, arrested the brothers at home and confiscated some “red devil” (barbiturate) capsules. — 1964
2. •
   The Humboldt squid, Dosidicus gigas.

noun1

1. •
   someone connected with Manchester United Football Club, as a fan, player, coach etc.