Learner's definition of CRISIS
: a difficult or dangerous situation that needs serious attention
the AIDS crisis
She was dealing with a family crisis at the time.
Most people blame the government for the country's worsening economic/financial/fiscal crisis.
last year's state budget crisis
an energy/fuel/water crisis [=a time when there is not enough energy/fuel/water]
a hostage crisis [=a situation in which someone is holding people as hostages]
In times of national crisis, we need strong leaders we can trust.
A year ago, both companies were in crisis.