Noun epsom salts has 2 senses
  1. Epsom salts, bitter salts - hydrated magnesium sulfate that is taken orally to treat heartburn and constipation and injected to prevent seizures
    --1 is a kind of magnesium sulfate
  2. Epsom salts - hydrated magnesium sulfate used as a laxative
    --2 is a kind of
    purgative, cathartic, physic, aperient
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