coram no·bis I. \-|nōbə̇s\adjective (or adverb) Etymology: New Latin, literally, before us 1.obsolete, of a writ of error: for the review in the King's Bench of its own judgments as to errors of fact 2.: based upon an alleged error of fact — used of a writ of review in some jurisdictions II. noun : a writ of error or a writ of review coram nobis < some doubt as to the continued availability of coram nobis in the federal courts — Harvard Law Review >