margin

noun

1. 1.

   The blank space at the edge of a page, outside the main printed or written area.

2. 2.

   To provide with a margin or border.

3. 3.

   The difference between two amounts, especially a winning or losing difference.

4. 4.

   (business) The difference between the cost of producing something and its selling price; profit.

5. 5.

   An extra amount allowed beyond what is minimally necessary.

6. 6.

   The edge or border of something.