The Collaborative International Dictionary of English v.0.48:
Pipevine \Pipe"vine`\, n. (Bot.)
Any climbing species of Aristolochia; esp., the Dutchman's
pipe (Aristolochia sipho). See under Dutchman.
[Webster 1913 Suppl.]
The Collaborative International Dictionary of English v.0.48:
Dutchman's-pipe \Dutchman's-pipe\ n.
a hardy deciduous American vine (Aristolochia durior)
having large, heart-shaped leaves and bearing brownish-purple
flowers which have their calyx tubes curved like the bowl of
a tobacco pipe. Formerly classified as Aristolochia Sipho.
Syn: pipe vine, Aristolochia macrophylla, Aristolochia
durior.
[1913 Webster + WordNet 1.5]