English

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Etymology

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Marketing name, apparently from placid +‎ -yl.

Noun

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Placidyl (countable and uncountable, plural Placidyls)

  1. (pharmacology) Trade name of ethchlorvynol, a sedative.
    • 1985, Priscilla Presley, Sandra Harmon, Elvis and Me, Putnam, →ISBN, page 151:
      His horror of insomnia, compounded with a family history of compulsive worrying, caused him to down three or four Placidyls, Seconals, Quaaludes, or Tuinals almost every night—and often it was a combination of all four.