Definition of "checkpoint"

checkpoint

noun
plural checkpoints
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
  Quotations
  A few days later I ford the Jordan River on a bus: Foot travel across Allenby Bridge checkpoint is strictly prohibited.
  2014, Paul Salopek, Blessed. Cursed. Claimed., National Geographic (December 2014)
2. (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. (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.
  Quotations
  This is not a videogame, this is real life! People get hurt! There is no restart from last checkpoint.
  2010 March 8, 20:40, in Chuck Versus the Beard (Chuck), season 3, episode 9, spoken by Chuck Bartowski (Zachary Levi)
verb
third-person singular simple present checkpoints, present participle checkpointing, simple past and past participle checkpointed
1. To set a checkpoint.