n 1  cap  :  a large genus (family Araliaceae) of widely distributed often aromatic herbs, shrubs, and trees with compound leaves and umbellate flowers that includes some with medicinal properties  2  :  a plant of the genus Aralia  3  :  the dried rhizome and roots of the American spikenard (Aralia racemosa) used as a diaphoretic and aromatic .
 
   
 
Similar sounding terms:  are·o·la  ar·yl  au·ral 
 
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