Usually means: Plant used as natural laxative.
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We found 33 dictionaries that define the word senna:

General (21 matching dictionaries)
  1. senna: Longman Dictionary of Contemporary English
  2. senna: Merriam-Webster
  3. senna: Oxford Learner's Dictionaries
  4. senna: American Heritage Dictionary of the English Language
  5. senna: Collins English Dictionary
  6. senna: Vocabulary.com
  7. Senna, senna: Wordnik
  8. senna: Wiktionary
  9. senna: Webster's New World College Dictionary, 4th Ed.
  10. senna: The Wordsmyth English Dictionary-Thesaurus
  11. senna: Infoplease Dictionary
  12. senna: Dictionary.com
  13. Senna (film), Senna (genus), Senna (herb), Senna (plant), Senna (poetic), Senna: Wikipedia, the Free Encyclopedia
  14. Senna: Online Plain Text English Dictionary
  15. senna: Webster's Revised Unabridged, 1913 Edition
  16. senna: Rhymezone
  17. Senna: AllWords.com Multi-Lingual Dictionary
  18. senna: Webster's 1828 Dictionary
  19. senna: FreeDictionary.org
  20. senna: Mnemonic Dictionary
  21. senna: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. senna: Encyclopedia

Medicine (8 matching dictionaries)
  1. senna: Merriam-Webster Medical Dictionary
  2. Dorland's Illustrated Medical Dictionary (No longer online)
  3. online medical dictionary (No longer online)
  4. Probert Encyclopaedia of Medicine (No longer online)
  5. GASTROLAB Digestive Dictionary (No longer online)
  6. Hepatitis C Information Central (No longer online)
  7. senna: Medical dictionary
  8. Senna: Merck Manuals

Science (2 matching dictionaries)
  1. Senna, Senna, Senna, Senna, Senna, Senna: Botanical Name listing of Plants
  2. A Modern Herbal, 1931, by Mrs. M. Grieve (No longer online)

Slang (1 matching dictionary)
  1. Senna: Urban Dictionary

(Note: See sennas as well.)

Definitions from Wiktionary (Senna)

noun:  (countable) Any of several plants of the tribe Cassieae, especially those of the genera Cassia and Senna, whose leaves and pods are used as a purgative and laxative.
noun:  (uncountable) The dried leaves or pods of these plants (especially of Senna alexandrina, syn. Cassia angustifolia or Cassia acutifolia), used medicinally.
noun:  (medicine) senna glycoside, a laxative.
noun:  A surname from Italian.

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    goldenrod,     mustard,     ochre,     amber,     saffron, more...



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