Margin

n.	1.	A border; edge; brink; verge; as, the margin of a river or lake.
	2.	Specifically: The part of a page at the edge left uncovered in writing or printing.
	3.	(Com.) The difference between the cost and the selling price of an article.
	4.	Something allowed, or reserved, for that which can not be foreseen or known with certainty.
	5.	(Brokerage) Collateral security deposited with a broker to secure him from loss on contracts entered into by him on behalf of his principial, as in the speculative buying and selling of stocks, wheat, etc. It is usually less than the full value of the security purchased, in which case it may be qualified by the portion of the full value required to be deposited; as, to buy stocks on 50% margin. Margin draft (Masonry) a smooth cut margin on the face of hammer-dressed ashlar, adjacent to the joints. Margin of a course (Arch.) that part of a course, as of slates or shingles, which is not covered by the course immediately above it. See 2d Gauge.
v. t.	1.	To furnish with a margin. [imp. & p. p. Margined ; p. pr. & vb. n. Marginging.]
	2.	To enter in the margin of a page.

Noun	1.	margin - the boundary line or the area immediately inside the boundary Synonyms: perimeter, border
	2.	margin - a permissible difference; allowing some freedom to move within limits Synonyms: leeway, allowance, tolerance
	3.	margin - the amount of collateral a customer deposits with a broker when borrowing from the broker to buy securities Synonyms: security deposit
	4.	margin - (finance) the net sales minus the cost of goods and services sold Synonyms: gross profit, gross profit margin
	5.	margin - the blank space that surrounds the text on a page
	6.	margin - a strip near the boundary of an object; "he jotted a note on the margin of the page" Synonyms: edge

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