keep sight of somebody/something
keep sight of someone or something
to keep someone or something in view. Try to keep sight of the skier. I want to keep sight of the children at all times.
keep sight of somebody/something,
keep somebody/something in sight
1 stay in a position where you can see somebody/something: If you keep the tower in sight, you won’t get lost.
2 remain aware of something; not forget something: It’s important to keep sight of the fact that you have a small chance of winning.