Pyrethrums

What does PYRETHRUMS mean?

Pyrethrums is a form of PYRETHRUM.

1. noun

   made of dried flower heads of pyrethrum plants

2. noun

   white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum

3. noun

   spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum

4. noun

   used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum

Definitions from WordNet 3.1, Princeton University.