margin

margin /ˈmɑɚʤən/ noun
plural margins
margin
/ˈmɑɚʤən/
noun
plural margins
Britannica Dictionary definition of MARGIN
[count]
1 
: the part of a page that is above, below, or to the side of the printed part
2 
: the place where something (such as a piece of land) stops : the edge of something
— often used figuratively in the phrase on the margins or (US) on the margin
3 
: an extra amount of something (such as time or space) that can be used if it is needed
◊ If you have little or no margin for/of error, it means that you need to be very careful not to make mistakes. If you have a greater margin for/of error, you can be less careful.
4 
: a measurement of difference
◊ A margin of error is a number or percentage that shows how accurate a measurement is.
— see also profit margin