Noun

1. A point or place where a check is performed, especially a point along a road or on a frontier where travellers are stopped for inspection

   The travellers were stopped at the checkpoint.

2. a situation, often represented by a point in time, at which the state of a database system is known to be valid, and to which it can be returned to in the event of a crisis by using a combination of backups and logs.

   After the crash, we rolled back the database to the last checkpoint.

3. A predetermined point in a map, level or scenario that the player may resume from if they die or restart from if they choose to.