Definition of 'calamus'

Noun

1. any tropical Asian palm of the genus Calamus; light tough stems are a source of rattan canes
2. the aromatic root of the sweet flag used medicinally
3. perennial marsh plant having swordlike leaves and aromatic roots
      Synonyms: sweet flag sweet calamus myrtle flag flagroot Acorus calamus
4. a genus of Sparidae
      Synonyms: genus Calamus
5. the hollow spine of a feather
      Synonyms: quill shaft

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