Awrah is a term used within Islam which denotes the intimate parts of the body, for both men and women, which must be covered with clothing. Exposing the awrah is unlawful in Islam and is regarded as sin. 
Awrah in Arabic means a weak point along a border and the like.
Covering that of which exposure is shameful and causes shame, whether the individual is male or female or hermaphrodite. Al-Mawsoo‘ah al-Fiqhiyyah, 24/173 
O children of Adam, We have bestowed upon you clothing to conceal your private parts and as adornment. But the clothing of righteousness - that is best. That is from the signs of Allah سبحانه و تعالىthat perhaps they will remember Qur’an.Surah Al-Araaf 7:26.
O Prophet ﷺ, tell your wives and your daughters and the women of the believers to bring down over themselves [part] of their outer garments. That is more suitable that they will be known and not be abused. And ever is Allah سبحانه و تعالىForgiving and Merciful. Qur’an.Surah Al-Ahzab 33:59
Abu Huraira رضي الله عنهreported Allah's Messenger ﷺas saying: Two are the types amongst the denizens of Hell, the one possessing whips like the tail of an ox and they flog people with their help. (The second one) the women who would be naked in spite of their being dressed, who are seduced (to wrong paths) and seduce others with their hair high like humps. These women would not get into Paradise and they would not perceive the odour of Paradise, although its frag- rance can be perceived from such and such distance (from great distance). Sahih Muslim Hadith 6840. 
It has been agreed among jurists on the basis of the Qur’an and Sunnah (traditons, Saying and actions of Muhammad ﷺ) that the awrah for the man, is defined as the area between the navel and the knees. And the awrah for the woman is defined as the whole body except for the face and palms among the Mahrem (males who are forbidden permanently for marriage).