Definition of "quarter-grain" []

• The grain of wood shown when a log is quartered. See quartered, 4. Compare felt-grain. (noun)

The Century Dictionary (Public Domain)

• "Eventually he manages to hit an alcoholic doctor for a quarter-grain tablet of morphine."
• "“Heard him say before the op. that a quarter-grain would be a fatal dose.”"
• "The third day of January, greatly to my surprise, a quarter-grain I found carried me through the twenty-four hours with apparently some slight remission of suffering."