Definify.com
Webster 1913 Edition
Monitor
1.
One who admonishes; one who warns of faults, informs of duty, or gives advice and instruction by way of reproof or caution.
You need not be a
monitor
to the king. Bacon.
2.
Hence, specifically, a pupil selected to look to the school in the absence of the instructor, to notice the absence or faults of the scholars, or to instruct a division or class.
3.
(Zool.)
Any large Old World lizard of the genus
Varanus
; esp., the Egyptian species (Varanus Niloticus
), which is useful because it devours the eggs and young of the crocodile. It is sometimes five or six feet long. 4.
[So called from the name given by
Captain Ericson
, its designer, to the first ship of the kind.] An ironclad war vessel, very low in the water, and having one or more heavily-armored revolving turrets, carrying heavy guns.
5.
(Mach.)
A tool holder, as for a lathe, shaped like a low turret, and capable of being revolved on a vertical pivot so as to bring successively the several tools in holds into proper position for cutting.
Monitor top
, the raised central portion, or clearstory, of a car roof, having low windows along its sides.
Webster 1828 Edition
Monitor
MON'ITOR
,Noun.
You need not be a monitor to the king.
1.
In schools, a person authorized to look to the scholars in the absence of the instructor, or to notice the absence of faults of the scholars; or to instruct a division of class.