English definition of “margin”
/ˈmɑːdʒɪn/ noun [C]
AMOUNT › the difference between two amounts of time, money, etc, usually between people in a competition: to win by a narrow/wide margin He took third place by a margin of seven minutes.
SPACE › an empty space down the side of a page of writing: You can make notes in the margin.
a margin of error › the amount by which a calculation can be wrong but still produce a good result: a margin of error of 5 percent