What is gravy sauce?

Native speaker’s answer
Rebecca
"Gravy" is a sauce made from thickened and seasoned juices of meat! You can make it once the meat has cooked and there are meat juices available from the cooking process. It's added as a side sauce to meals with meat and put on top of other foods like potatoes. Ex: Can you pass the gravy, please? Ex: We can eat once the gravy is ready.