calamus

< /ˈkæl əˌmaɪ/.

1. the sweet flag, Acorus calamus.
2. its aromatic root.
3. any of various tropical Asian palms of the genus Calamus, some of which are a source of rattan.
4. the hollow base of a feather; a quill.

noun plural -mi (-ˌmaɪ)

1. any tropical Asian palm of the genus Calamus, some species of which are a source of rattan and canes
2. another name for sweet flag
3. the aromatic root of the sweet flag
4. ornithol the basal hollow shaft of a feather; quill