Source : Webster's Revised Unabridged Dictionary (1913)

Erratum \Er*ra"tum\, n.; pl. {Errata}. [L., fr. errare, erratum,
   to wander, err. See {Err}.]
   An error or mistake in writing or printing.

         A single erratum may knock out the brains of a whole
         passage.                                 --Cowper.

Source : WordNet®

erratum
     n : a mistake in printed matter resulting from mechanical
         failures of some kind [syn: {misprint}, {typographical
         error}, {typo}, {literal error}, {literal}]
     [also: {errata} (pl)]