error

n. mistake, something that is incorrect

Error refers to a difference between actual behavior or measurement and the norms or expectations for the behavior or measurement. The concrete meaning of the Latin word error means "wandering" or "straying", although the metaphorical meaning "mistake, misapprehension" is more common.
See more at Wikipedia.org...

n. error, mistake; bug, programming error which causes a malfunction (Computers); miss, failure to hit something; fault, wrong; fallacy; misdeed; misunderstanding; inadvertence

(n.)
The difference between the observed value of a quantity and that which is taken or computed to be the true value; -- sometimes called residual error.
  

(n.)
The difference between the approximate result and the true result; -- used particularly in the rule of double position.
  

(n.)
The difference between an observed value and the true value of a quantity.
  

(n.)
A wandering; a roving or irregular course.
  

(n.)
A wandering or deviation from the right course or standard; irregularity; mistake; inaccuracy; something made wrong or left wrong; as, an error in writing or in printing; a clerical error.
  

(n.)
A moral offense; violation of duty; a sin or transgression; iniquity; fault.
  

(n.)
A mistake in the proceedings of a court of record in matters of law or of fact.
  

(n.)
A fault of a player of the side in the field which results in failure to put out a player on the other side, or gives him an unearned base.
  

(n.)
A departing or deviation from the truth; falsity; false notion; wrong opinion; mistake; misapprehension.
  

1. The difference between a computed, estimated, or measured value and the true, specified, or theoretically correct value. (188 ) 2. A deviation from a correct value caused by a malfunction in a system or a functional unit. Note: An example of an error is the occurrence of a wrong bit caused by an equipment malfunction. (188 )