The meaning of the phrase To give an edge (in + V-ing)" usually refers to giving someone a competitive or advantageous position in a specific activity.
What is phrase?
A phrase is a collection of words that appears in a sentence and is used as a single entity. A subject and a predicate, or a verb and its auxiliary words, are required for a sentence to convey a whole idea, but they are not always included in a phrase.
The expression is frequently employed in situations where a particular element or course of action gives someone an additional or improved capability, increasing their likelihood of success or excellence.
For example
"Regular exercise can give you an edge in maintaining good health."
In this instance, exercising frequently gives you a benefit or an advantage when it comes to keeping your health. The expression is frequently employed in conversations concerning attaining a competitive edge or enhancing one's prospects within a certain setting.