( n. )
A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also Pyrethrum camphor.
( n. )
A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also Pyrethrum camphor.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012