Prostrate/ˈprɑːstreɪt/ Definition 1 of 3Pro Tip 1/2Physical Position Used to describe someone physically lying down, facing the earth. In the movie, the hero lay prostrate on the ground, defeated. Pro Tip 2/2Complete Submission Illustrates extreme deference, humility, or subservience, often in a ceremonial context. The courtiers lay prostrate as the king passed.