the GNU version of the Collaborative International Dictionary of English
n. An erroneous computation.
The Century Dictionary and Cyclopedia
n. An erroneous or false reckoning.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a mistake in calculating
Word Usage
"Of course, we can only assume that the sirens and squeals that were emitted due to his misreckoning were immensely louder than the prior hum, but some folks just love to learn the hard way."