• synonyms

blue mass

noun Pharmacology.
  1. Also called mercury mass. a preparation of metallic mercury and other ingredients, used for making blue pills.
  2. blue pill.
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Origin of blue mass

An Americanism dating back to 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for blue mass

Historical Examples of blue mass

  • The doctor gave him a lot of blue-mass pills, which Si threw into the fire as soon as he got back to his quarters.

    Si Klegg, Book 1 (of 6)

    John McElroy

  • "You'd better take a dose of blue-mass," her aunt suggested when she had sighed seven times dolefully at the tea table.