Definitions

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

  • n. See carbonado2.
  • n. Coal.

from the GNU version of the Collaborative International Dictionary of English

  • adj. See Carbonado.
  • n. coal; (Min.) See Carbonado.

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

  • n. an inferior dark diamond used in industry for drilling and polishing

Etymologies

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Examples

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Comments

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  • Black diamond is a trail rating for an expert trail. This denotes that serious injury can occur in an accident.

    January 12, 2013