calamus

noun

1. 1

   a genus of Sparidae

2. 2

   the hollow spine of a feather

3. 3

   perennial marsh plant having swordlike leaves and aromatic roots

4. 4

   the aromatic root of the sweet flag used medicinally

5. 5

   any tropical Asian palm of the genus Calamus; light tough stems are a source of rattan canes