naught also nought (nôt)
n.

1. Nonexistence; nothingness.
2. The figure 0; a cipher; a zero.

pron.
Nothing: All their work was for naught.

adj.

1. Nonexistent.
2. Insignificant.

[Middle English, from Old English nāwiht : nā, no + wiht, thing.]

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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