calamus
/ˈkæləməs/noun
(pl.calami /-maɪ/ )
1
- another term for SWEET FLAG.
1.1
- （亦作calamus root）[mass noun] a preparation of the aromatic root of the sweet flag白菖蒲根; 白菖蒲根制剂。
2
- Zoology the hollow lower part of the shaft of a feather, which lacks barbs; a quill【动】羽根; 翮。
词源
late Middle English (denoting a reed or an aromatic plant mentioned in the Bible)： from Latin, from Greek kalamos. Sense 1 dates from the mid 17th cent.