examine (something) in order to determine its accuracy, quality, or condition, or to detect the presence of something.
customs officers have the right to check all luggage
stop or slow down the progress of (something undesirable).
efforts were made to check the disease
move a piece or pawn so that (the opposing king) is under attack.
Remember: when you check a King with your Rook, you always like to have as much distance between your Rook and the enemy King as possible.
(in poker) choose not to make a bet when called upon, allowing the action to move to another player.
Each player may check , bet, call, or raise as usual, staking the required amount for each card they hold.