WordReference Random House Unabridged Dictionary of American English © 2026
blue′ pill′, [Pharm.]
  1. Drugsa pill of blue mass, used in medicine chiefly as a cathartic. Also called mercury mass. 
  • 1785–95

'blue pill' also found in these entries (note: many are not synonyms or translations):
blue mass - mercury mass

🗣️Forum discussions with the word(s) "blue pill" in the title:


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