Noun mount saint helens has 1 sense
  1. Mount Saint Helens, Mount St. Helens, Mt. St. Helens - an active volcano in the Cascade Range in southwestern Washington; erupted violently in 1980 after 123 years of inactivity
    --1 is a kind of volcano
    --1 is a part of
     Cascades, Cascade Range, Cascade Mountains; Washington, Evergreen State, WA
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