Definitions

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

  • n. Poorly crystallized diamonds used for industrial cutting and abrasion.
  • n. A carbonado.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Poor quality diamond, used for industrial cutting or abrasion; a poorly crystallized diamond.

from the GNU version of the Collaborative International Dictionary of English

  • n. Imperfectly crystallized or coarse diamonds, or fragments made in cutting good diamonds which are reduced to powder and used in lapidary work.

from The Century Dictionary and Cyclopedia

  • n. A collective name for diamonds of inferior quality, especially such as have a radiating crystallization, so that they will not take a polish.
  • n. An amorphous variety of diamond, brown, gray, or black in color, and known also as black diamond or carbonado, found massive in Brazil in association with pure diamonds.

Etymologies

Probably from Dutch boort.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.

  • Mmm... pasta alla carbonara... *drooling*

    July 10, 2008

  • Here's bort in yur eye! Arrrrgh!

    July 10, 2008

  • 2. A carbonado. (American Heritage): Hey, is that the Italian bacon and eggs pasta dish? I love that!

    Ooops! Wrong list...

    July 10, 2008

  • For some reason, it sticks in my mind that the standard drinking toast in Iceland is something like "scowly bort".

    Perhaps one of our freshly minted Wordie Icelandic experts might be able to enlighten us further?

    July 10, 2008

  • I may adapt the term crushing bort to refer to a few particularly yawn-inducing acquaintances.

    July 10, 2008

  • I thought it was a joke from the Simpsons.

    July 9, 2008

  • Noobly-noot, bort bort!

    July 9, 2008

  • And here I thought "bort" was just a common Swedish chef ejaculation.

    July 9, 2008

  • Low-quality diamond, in granular aggregate or small fragments, valuable only in crushed or powdered form, esp. for industrial use as an abrasive. (dictionary.com)

    1. Poorly crystallized diamonds used for industrial cutting and abrasion.
    2. A carbonado. (American Heritage)

    Bort or boart is a term used in the diamond industry to refer to shards of gem-grade/quality diamonds. In the manufacturing and heavy industries, "bort" is used to describe dark, imperfectly formed/crystallized diamonds of varying levels of opacity. The lowest grade, "crushing bort", is crushed by steel mortars and used to make industrial-grade abrasive grits. Small bort crystals are used in drill bits. The Democratic Republic of the Congo provides 75% of the world supply of crushing bort. (Wikipedia)

    July 9, 2008