purple heart

noun2

1. •
   The drug phenobarbitone when taken recreationally.
2. •
   (slang, historical) A drinamyl tablet when taken recreationally, popular in the 1960s.

   • Detective Peter Goodall said the source of the tablets had not been traced. "Purple heart" or drinamyl tablets, were a stimulant drug and habit-forming. — 1963

noun1

1. •
   (US) 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.