[ kal-uh-muhs ]
/ ˈkæl ə məs /
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noun, plural cal·a·mi [kal-uh-mahy]. /ˈkæl əˌmaɪ/.
the sweet flag, Acorus calamus.
its aromatic root.
any of various tropical Asian palms of the genus Calamus, some of which are a source of rattan.
the hollow base of a feather; a quill.
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Origin of calamus

1350–1400; Middle English <Latin <Greek kálamos reed, stalk
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How to use calamus in a sentence

British Dictionary definitions for calamus

/ (ˈkæləməs) /

noun plural -mi (-ˌmaɪ)
any tropical Asian palm of the genus Calamus, some species of which are a source of rattan and canes
another name for sweet flag
the aromatic root of the sweet flag
ornithol the basal hollow shaft of a feather; quill

Word Origin for calamus

C14: from Latin, from Greek kalamos reed, cane, stem
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012