nod off Informal
Meaning: If you nod off, you fall asleep without meaning to.Synonym: doze off
- nod off We went to see the new James Bond movie, but Gary nodded off half way through and started snoring. It was pretty funny.
- nod off while doing sth Many bad accidents happen because people nod off while driving, so you should never drive if you're feeling sleepy.
Many students started to nod off in their English class. The lesson must have been