…for the dictionary definition shall taint ye:

The (Libby trial) jurors asked if they could cut out early on Friday at 2:00 pm. They also asked for a dictionary. The judge said yes to the Friday escape. He said no to the dictionary, explaining to the jury that if they had any questions about the definition of any word used in the instructions or the evidence they should consult with him, not a dictionary.

It may (or may not) be good law, but sure as hell ‘taint common sense.