The Collaborative International Dictionary
blue bindweed
Bindweed \Bind"weed`\, n. (Bot.) A plant of the genus Convolvulus; as, greater bindweed ( Convolvulus Sepium); lesser bindweed ( Convolvulus arvensis); the white bindweed, the blue bindweed, the Syrian bindweed. The black bryony, or Tamus, is called black bindweed, and the Smilax aspera, rough bindweed.
The fragile bindweed bells and bryony rings.
--Tennyson.