[bit-er-weed] 
| 1. | any of various plants containing a bitter principle, as those of the genus Picris. |
| 2. | a sneezeweed, Helenium amarum. |
| bitterweed | |
noun | |
| 1. | widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States [syn: oxtongue] |
| 2. | any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma [syn: ragweed] |
ərˌwid