What is aurat?

What is Aurat? What "aurat" means actually? I tried checking the dictionary to find what is "aurat" in english since "aurat" is an Arabic word. And I also tried checking the english Quran translator to find what is "aurat" called in english..So what I found is that "aurat" in Quran is called the "ornament" (24:31), "shame" (7:26) and so on in english.. Well, literally "aurat" comes from the word "aurah" in Arabic which means shame and humility(please tell me if I'm wrong). And basically it means certain part of the body that we need to cover from others to see.. Where is Aurat? So, if we are talking about the certain part in the body, where is that certain part? Well, aurat for man and woman is different, since man and woman are different.. For men, the part where they have to close is between the navel untill the lower part of their knee..For women, they have to close all part of their body except their face and their wrist.. When should we close our Aurat? Well, Aurat should be closed once you hit puberty. Why? Because when we hit puberty, our sins and deeds will be counted by Allah. For men, their Aurat should be closed all the time except infront of their wife. For women, their Aurat is like the men's Aurat infront of their husbands, their fathers, the fathers of their husbands,their sons,the sons of their husbands, their brothers, their brothers' sons, their sisters' sons, and so on (please read the Quran, 24:31)..So, infront of others who are not mentioned in the Quran, the women can only show their face and wrist..