Dictionary
3 ENTRIES FOUND:

calamus

noun cal·a·mus \ˈka-lə-məs\
plural cal·a·mi\-ˌmī, -ˌmē\

Definition of CALAMUS

1
a :  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

Origin of CALAMUS

Latin, reed, reed pen, from Greek kalamos — more at haulm
First Known Use: 14th century

calamus

noun cal·a·mus \ˈkal-ə-məs\   (Medical Dictionary)
plural cal·a·mi \-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

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