Check

noun

1. A situation in which the king is directly threatened by an opposing piece.
2. An inspection or examination.

   "I don't know if she will be there, but it's worth a check."

3. A control; a limit or stop.

   "The castle moat should hold the enemy in check."

4. A mark (especially a checkmark: ✓) used as an indicator.

   "Place a check by the things you have done."

5. An order to a bank to pay money to a named person or entity.

   "I was not carrying cash, so I wrote a check for the amount."