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
sweetroot
3.
perennial marsh plant having swordlike leaves and aromatic roots
beewort Acorus calamus flagroot myrtle flag sweet calamus sweet flag
4.
the hollow spine of a feather
quill shaft