| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| blessed thistle |
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| NOUN: | An annual, yellow-flowered, thistlelike Mediterranean herb (Cnicus benedictus) in the composite family, used in herbal medicine. | | ETYMOLOGY: | From its use by monks in the Middle Ages.
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| The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. |
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