What is the meaning of Go_to_ground?

To escape into a burrow, hole, etc. when being hunted.

To hide from public view or sequester oneself, especially when authorities, members of the news media, or others are looking for one.

To fall to the ground, lose one's footing, come off one's feet, whether by design, accident, or foul

(of the ball) to touch the ground; to be dropped

Source: wiktionary.org