1. [noun] 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
2. [noun] (computing) 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 in the event of a crisis by using a combination of backups and logs; the data stored at this event
3. [noun] (video games) 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.
4. [verb] To set a checkpoint
5. [noun] A place (as at a frontier) where travellers are stopped for inspection and clearance.