What is "barrenwort"

Barrenwort \Bar"ren*wort`\, n. (Bot.) An herbaceous plant of the Barberry family ( Epimedium alpinum), having leaves that are bitter and said to be sudorific.

n. A herb, (taxlink Epimedium alpinum species noshow=1), once thought to prevent conception

n. slow-growing creeping plant with semi-evergreen leaves on erect wiry stems; used as ground cover [syn: bishop's hat, Epimedium grandiflorum]