emer·gen·cy 
/ɪˈmɚʤənsi/ noun
plural emer·gen·cies /ɪˈmɚʤənsi/ noun [count] : an unexpected and usually dangerous situation that calls for immediate action
▪ Her quick thinking in an emergency saved the baby's life. ▪ Here's a phone number where I can be reached in (the event of) an emergency. — often used before another noun ▪ emergency vehicles/procedures/exits ▪ The pilot was forced to make an emergency landing when one of the engines failed. ◊A state of emergency is declared to give the government special powers to deal with an emergency.
▪ The government declared a state of emergency to deal with all damage caused by the hurricane.
▪ Her quick thinking in an emergency saved the baby's life. ▪ Here's a phone number where I can be reached in (the event of) an emergency. — often used before another noun ▪ emergency vehicles/procedures/exits ▪ The pilot was forced to make an emergency landing when one of the engines failed. ◊A state of emergency is declared to give the government special powers to deal with an emergency.
▪ The government declared a state of emergency to deal with all damage caused by the hurricane.
