calamus

noun
cal·​a·​mus | \ˈka-lə-məs \
plural calami\ -​ˌmī , -​ˌmē \

Definition of calamus 

1a : sweet flag

b : the aromatic peeled and dried rhizome of the sweet flag that is the source of a carcinogenic essential oil

2 : the hollow basal portion of a feather below the vane : quill

First Known Use of calamus

14th century, in the meaning defined at sense 1a

History and Etymology for calamus

Latin, reed, reed pen, from Greek kalamos — more at haulm

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The first known use of calamus was in the 14th century

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More Definitions for calamus

calamus

noun
cal·​a·​mus | \ˈkal-ə-məs \
plural calami\ -​ˌmī, -​ˌmē \

Medical Definition of calamus 

2 : the aromatic peeled and dried rhizome of the sweet flag that is the source of a carcinogenic essential oil

More from Merriam-Webster on calamus

Britannica.com: Encyclopedia article about calamus

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