Definition: A "gaff" in the context of law refers to a violation or an error committed by a judge, a juror, or any other person who is not qualified or competent to make a decision. Gaffes can occur during legal proceedings, including court interviews, jury selection, and trial presentations. They can also refer to errors made by judges in determining guilt or innocence, particularly when they are based on hearsay evidence that was not actually offered at the trial itself.