英语释义
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n. The tubers of the Mexican plant Ipomoea purga (or Exogonium
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purga), a climber much like the morning-glory. The abstract, extract,
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and powder, prepared from the tubers, are well known purgative
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medicines. Other species of Ipomoea yield several inferior kinds of
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jalap, as the I. Orizabensis, and I. tuberosa.