purple heart

Short definition from Wiktionary

Noun

1. 1
   The drug phenobarbitone when taken recreationally.
2. 2
   A drinamyl tablet when taken recreationally, popular in the 1960s.
3. 3
   A US military decoration awarded in the name of the President of the United States to those wounded or killed while serving on or after 5 April 1917.