Willow-weed \Wil"low-weed`\, n. (Bot.) (a) A European species of loosestrife ({Lysimachia vulgaris}). (b) Any kind of Polygonum with willowlike foliage.
Lysimachia vulgaris n : frequently considered a weed; Europe and Asia [syn: {yellow loosestrife}, {garden loosestrife}]