niggerhead

  1. Noun.  (nautical) A bollard made from an old cannon.
  2. Noun.  An isolated part of a coral reef.
  3. Noun.  The coneflower.
  4. Noun.  Hard tussock on tundra; often moss.
  5. Noun.  (geology) Archaic colloquialism for geode. .

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This entry was last updated on RefTopia from its source on 3/20/2012.