Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun plumbago

2 senses of plumbago

Sense 1
graphite, black lead, plumbago -- (used as a lubricant and as a moderator in nuclear reactors)
       => carbon, C, atomic number 6 -- (an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds)

Sense 2
plumbago -- (any plumbaginaceous plant of the genus Plumbago)
       => herb, herbaceous plant -- (a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests)