ephedra
Concise Oxford English Dictionary © 2008 Oxford University Press:
ephedra /ɛˈfɛdrə/
▶noun an evergreen trailing or climbing shrub of warm arid regions, some kinds of which are a source of the drug ephedrine. [Genus Ephedra.]
– origin mod. L., from L., ‘equisetum’ (which it resembles).
'ephedra' also found in these Oxford entries:
