What is the Meaning of the Idiom
BURN THE MIDNIGHT OIL?
stay awake very late at night because something needs your attention
1. I’m so tired. Our baby was sick last night, so I burned the midnight oil in order to take her temperature regularly.
2. You look exhausted. Have you been burning the midnight oil a lot lately?
3. We have to finish this project before Friday. We are going to have to burn the midnight oil for a few nights.