To keep something secret
No one is supposed to know our plan. Please keep a lid on it.
To watch intently.
Please keep an eye on my children for me. I need to go to the store.
To be quiet; to not be noisy.
Please keep in down. I'm trying to study.
To work hard or focus heavily on work
If you keep your nose to the grindstone, you will do very well.
To relax.
After work tonight, I'm going to go home and kick back.
To engage in playful joking or teasing.
Don't take Max seriously. He was just kidding around when he said that you were ugly.
to stop doing something.
Would you two please knock it off? That really annoys me.
