i·ron·weed 
(īərn-wēd′)
(īərn-wēd′)n.
Any of various plants of the genus Vernonia of the composite family, having alternate leaves and clusters of purplish flower heads.
- participatory
- participial
- participially
- participle
- particle
- particle accelerator
- particle beam
- particleboard
- particle board
- particle decay
- particle physics
- parti-colored
- particular
- particularism
- particularist
- particularistic
- particularity
- particularization
- particularize
- particularizer
- particularly
- particulate
- particulate matter
- partier
- parting