1. Any plumbaginaceous plant of the genus Plumbago
   "The blue plumbago is a popular ornamental plant in warm climates"
    
2. Used as a lubricant and as a moderator in nuclear reactors
   "Plumbago was applied to reduce friction in the mechanical parts";
   - graphite, black lead

Derived forms: plumbagos

Type of: atomic number 6, C, carbon, herb, herbaceous plant

Part of: genus Plumbago

Encyclopedia: Plumbago