from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The toxin 5-hydroxy-2-methyl-1,4-naphthoquinone.
from the GNU version of the Collaborative International Dictionary of English
- n. A crystalline substance said to be found in the root of a certain plant of the Leadwort (Plumbago) family.
from The Century Dictionary and Cyclopedia
- n. A name given by Dulong to ophioxylin, through an error in identifying the plant from which he obtained the compound.
plumbago + -in (Wiktionary)