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

  • noun black substance containing char in the form of carbonized bone; used as a black pigment


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  • Animal byproduct, formerly used in the production of sugar.

    "Bone char, also known as bone black or animal charcoal, is a granular black material produced by calcinating animal bones: the bones are heated to high temperatures in the absence of air to drive off volatile substances. It consists mainly of calcium phosphate and a small amount of carbon. Bone char has a very high surface area and a high absorptive capacity for lead, mercury, and arsenic."

    - Wikipedia

    October 14, 2007

  • Bone char is a.k.a. ivory black, or abaiser.

    September 26, 2009

  • Ew.

    March 4, 2014