Meaning of vitriol

vit•ri•ol

Pronunciation: (vi'trē-ul), [key]
— n., v., -oled, -ol•ing -olled, -ol•ling.
—n.
  1. any of certain metallic sulfates of glassy appearance, as copper sulfate or blue vitriol, iron sulfate or green vitriol, zinc sulfate or white vitriol, etc.
  2. oil of vitriol; sulfuric acid.
  3. something highly caustic or severe in effect, as criticism.
—v.t.
  1. to treat with or as with vitriol, esp. sulfuric acid.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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