Emily Dickinson Lexicon

MON-I-TOR, n. [L.]

1. One who warns of faults or informs of duty; one who gives advice and instruction by way of reproof or caution. You need not be a monitor to the king. Bacon.
2. In schools, a person authorized to look to the scholars in the absence of the instructor, or to notice the absence or faults of the scholars, or to instruct a division or class.
3. In zoology, a genus of lizards inhabiting the warmer parts of the eastern continent.