People assume it means whether or not you like to be around people. Here is the best way that I’ve heard introversion explained.
Introverts recharge when they are by themselves, and prefer less external stimulation.
That is to say, people are rewarded on their sociability and ability to appear extroverted and boisterous.
Many introverts feel steam-rolled in this culture and have lost touch with their inherent introverted strengths.
Use it well, and you may discover it’s a quality the ladies will find most attractive about you.