calamus(redirected from Calamus Root)
Also found in: Dictionary, Thesaurus, Medical.
calamus(kăl`əməs): see arumarum,
common name for the Araceae, a plant family mainly composed of species of herbaceous terrestrial and epiphytic plants found in moist to wet habitats of the tropics and subtropics; some are native to temperate zones.
..... Click the link for more information. .
the hollow lower part of the shaft of a feather. The calamus is partly beneath and partly above the skin. It lacks a vane and is usually semitransparent. Inside the calamus is a membranous formation. The calami of the flight feathers, which experience considerable stress during flight, are attached to the bones of the wings.