Vitriol

noun
1.
Chemistry. 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.
verb (used with object), vitrioled, vitrioling or (especially British) vitriolled, vitriolling.
4.
to treat with or as with vitriol, especially sulfuric acid.
noun
1.
another name for sulphuric acid
2.
any one of a number of sulphate salts, such as ferrous sulphate (green vitriol), copper sulphate (blue vitriol), or zinc sulphate (white vitriol)
3.
speech, writing, etc, displaying rancour, vituperation, or bitterness
verb (transitive) -ols, -oling, -oled, -olling, -olled
4.
to attack or injure with or as if with vitriol
5.
to treat with vitriol

vitriol vit·ri·ol (vĭt’rē-ōl’, -əl)
n.

Any of various sulfates of metals, such as ferrous sulfate, zinc sulfate, or copper sulfate.

See sulfuric acid.

vitriol
(vĭt’rē-ōl’, -əl)

A former name for sulfuric acid.

Any of various sulfates of metals, such as ferrous sulfate (green vitriol), zinc sulfate, or copper sulfate (blue vitriol). See also blue vitriol.