Shaykh Yahya al-Hajooree, may Allah preserve him, was asked on the definition of a daroorah.
He hafidaho-Allah answered with the following:
“daroorah is that which has been defined by the legislation of Islaam. The scholars past and present have mentioned that it is that which causes damage to oneself or one’s wealth of that which the wealth of that which he cannot bear. Some people have expanded the border lines of daroorah [for more than it is]… ”
[Al-Kanzuth Thameen, (131/5)]
AbdulFattaah Bin Uthman