| Noun | 1. | bocconia - herb of China and Japan widely cultivated for its plumelike panicles of creamy white flowers poppy - annual or biennial or perennial herbs having showy flowers genus Macleaya, Macleaya - a perennial herb of eastern Asia: plume poppy |
| 2. | bocconia - small Central American tree having loose racemes of purple-tinted green flowers genus Bocconia - tropical American trees or shrubs closely related to genus Macleaya angiospermous tree, flowering tree - any tree having seeds and ovules contained in the ovary |