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

  • n. See block.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Repression of painful thoughts.
  • n. Inability to continue a train of thought.

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

  • n. an inability to remember or think of something you normally can do; often caused by emotional tension


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  • JM is trying to draw a cube but keeps getting a mental block.

    May 25, 2011