Associations to the word «Pyrethrin»
Wiktionary
PYRETHRIN, noun. (organic compound) Any of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in having a cyclopropane ring.
Wise words
Wisdom does not show itself so much in precept as in life -
in firmness of mind and a mastery of appetite. It teaches us
to do, as well as talk, and to make our words and actions
all of a color.