verbena
Concise Oxford English Dictionary © 2008 Oxford University Press:
verbena /vəːˈbiːnə/
▶noun a chiefly American ornamental plant with heads of bright showy flowers. [Genus Verbena.]
– origin mod. L., from L., lit. ‘sacred bough’, in med. L. ‘vervain’.
'verbena' also found in these Oxford entries:

