Black adder

Black adder may refer to either of two classifications of snake:

• Vipera berus, a viper species found in Europe and Asia
• Eastern hognose snake, a basically non-venomous snake found in the United States

Or the British TV series:

• The Black Adder, first series of the sitcom Blackadder
  • "The Black Adder" (pilot episode), the unaired pilot episode of the series