i Register
In some senses, margin is marked as figuratively. Watch for register when choosing this word.
noun
The edge of the paper, typically left blank when printing but sometimes used for annotations etc.
The edge or border of any flat surface.
Nothing could be more business-like than the construction of the stout dams, and nothing more gently rural than the limpid lakes, with the grand old forest trees marshalled round their margins like a veteran army that had marched down to drink, only to be stricken motionless at the water’s edge.
The lobule margins, furthermore, are arched away from the lobe, with the consequence that (when fully inflated) the abaxial leaf surface forms the interior lining of the lobule.
The edge defining inclusion in or exclusion from a set or group.
As far as space is concerned, Mary Lamb finds herself at the farthest margin of society - among tramps - when the novel begins.
A difference or ratio between results, characteristics, scores.
margin of victory
Chelsea will point to that victory margin as confirmation of their superiority - but Spurs will complain their hopes of turning the game around were damaged fatally by Atkinson's decision.
A permissible difference; allowing some freedom to move within limits.
margin of error
verb
To add a margin to.
To enter (notes etc.) into the margin.
To trade (securities etc.) on margin (collateral).
This sounds easy, but bear in mind that margined portfolios decline faster than cash portfolios in a bear market.