n 1  cap  :  a genus of shrubs that are usu. placed with the legumes (family Leguminosae) or sometimes in their own family (Krameriaceae) and include two (K. triandra and K. argentea) with astringent roots formerly used in pharmacy  2  :  the dried roots of either of two plants of the genus Krameria (K. triandra and K. argentea) - called also rhatany 
 
Kra•mer, Johann Georg Heinrich (d 1742), Austrian botanist. Kramer was also a military surgeon and had the advanced idea that scurvy can be cured by the inclusion of lemons and limes in the diet. The genus Krameria was named in his honor by Linnaeus in 1758.
 
 
 
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