fire

burn out period 

=============== 

If a person works too hard and doesn't make time for rest and relaxation, he/she may experience a burn out period 

 burn the midnight oil   

=====================

to work or study until late at night

My friend is in medical school and she burns the midnight oil a lot  

a smoke detector  

======================== 

This is a sensitive device that is able to detect smoke. If the device detects smoke, a loud alarm/siren goes off in order to notify even sleeping residents 

  

burn the candle at both ends  

========================= 

  to get very tired by doing things until very late at night and    

getting up early in the mornings 

 

a forest fire 

================== 

A large fire that takes place and spreads quickly in nature is called a forest fire 

 

 play with fire  

===============

 to do something that could have a very dangerous or harmful result  

Dating the boss's daughter is playing with fire 

 

fireworks 

=============== 

a small container filled with powder that burns or explodes to produce coloured lights and noise in the sky 

Jeff and David were in the back yard setting off fireworks  

(sth) 

set city hall on fire 

==================== 

make something start burning  

The arsonist set city hall on fire. Luckily, firefighters were able to put out the fire before any real damage occurred, and the arsonist is going to jail 

 

 Fire away 

============== 

used to tell someone that you are ready to answer questions 

fire alarm  

================ 

a piece of equipment that makes a loud noise to warn people of a fire in a building  

The fire alarm went off at school today. The teachers made us line-up and then they led us all out of the building. Luckily, there was no fire; it was just a drill