When you check something, you look at it to make sure it is right or safe. You do this to find any problems or mistakes.
Please check your homework for mistakes.
I will check the doors before leaving.
In sports, to check means to block or stop an opponent to keep the ball or puck from moving forward.
He checked the player to stop him scoring.
She checked the puck to keep control.
Check means to find out if something is true or correct by looking or testing it carefully.
We must check the facts before writing.
Check the weather before you go out.
Check means a pattern of small squares on cloth or paper. It is common in clothes like shirts or tablecloths.
She wore a shirt with a red check pattern.
The tablecloth has a blue and white check.