Learner's definition of INCIDENT
1 : an unexpected and usually unpleasant thing that happens
We just want to put that embarrassing incident behind us.
Two people were shot yesterday in two separate incidents.
Aside from a few isolated incidents, the crowd was well-behaved.
a shooting incident
Many such incidents go unreported.
2 [count] : an event or disagreement that is likely to cause serious problems in relations between countries