from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See graphite.
  • n. Any of various plants of the genus Plumbago; leadwort.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. graphite
  • n. leadwort

from the GNU version of the Collaborative International Dictionary of English

  • n. Same as graphite.
  • n. A genus of herbaceous plants with pretty salver-shaped corollas, usually blue or violet; leadwort.

from The Century Dictionary and Cyclopedia

  • n. Black-lead; graphite. See graphite.
  • n. [capitalized] [NL. (Tournefort, 1700).] A genus of plants, the leadworts, of the order Plumbagineæ and tribe Plumbageæ. characterized by a glandular calyx with five short erect teeth, a salver-shaped corolla with slender tube, free stamens, and five styles united into one nearly to the top.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. used as a lubricant and as a moderator in nuclear reactors
  • n. any plumbaginaceous plant of the genus Plumbago


Latin plumbāgō, lead ore, from plumbum, lead.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin plumbāgō, from plumbum ("lead"). (Wiktionary)



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