1) "Shortcut" refers to a shorter or a faster way to get to a destiny or achieving something.
I'm gonna take this shortcut and i will get to town 20 minutes earlier.
2) "Shortcut" also means to do something passing over the rules or cheating.
He won the contest because he took a shortcut.
3) In computing slang a "shortcut" is an icon that represents a link to an item, rather than the item itself.
He clicked on the shortcut to open the program
I hope it helps you.