1) Genus hamamelis 2) Plant genus 
• (n.) A genus of plants which includes the witch-hazel (Hamamelis Virginica), a preparation of which is used medicinally.
Ham`a·me'lis (hăm`ȧ*mē'lĭs) noun [ New Latin , from Greek 
Type: Term Pronunciation: ham′ă-mē′lis Definitions: 1. A shrub or small tree, Hamamelis virginiana (family Harmarmelidaceae), the bark and dried leaves of which have been used externally as an application to contusions and other injuries, in headache, and for the cure of noninflammatory hemorrhoids; the water, popularly known ...
[n] - deciduous shrubs or small trees: witch hazel