all-nighter

noun
UK /ˌɔːlˈnaɪtə/
US /ˌɔːlˈnaɪtər/

A time when you stay awake all night instead of sleeping.

We pulled an all-nighter to finish our science project before the deadline.


OTHER MEANINGS

2. A study session that lasts through the whole night, usually before an exam.

The students had an all-nighter in the library before finals.

3. A party or event that continues until morning.

The concert turned into an all-nighter that ended at sunrise.

4. A work shift or task that goes on all night without a break.

The nurses worked an all-nighter during the storm.