Shortened slang for "legendary", or, more commonly, for "legend".

When someone goes to the gym and spends 90% of the time on their phones scrolling through social media

Short for Legendery, is some thing is good, excellent or fun it is "Ledge"

an expression also short for legend, used to describe a fantastic person.

A legend in the making.
An individual who is on the verge of a legendary status.
Showing appreciation to someone due to a favour.
Note: The word 'Legend' is often over used for individuals who are truly not worthy of the title. Using the word 'Ledge' can be a more meaningfull fit, without taking anything away from the person.

A name give to a young lad after he helped a lady find her lost children.

Ledge, a noun, short for legend, refers to someone who's just done something so astonishing that they'll be remembered as "that cool dude/dudette/duderino that did X." I.e., an absolute madlad.