nod off
US /nɑːd ɑːf/
UK /nɑːd ɑːf/

1.
in slaap vallen, dommelen
to fall asleep, especially unintentionally
:
•
He kept nodding off during the boring lecture.
Hij bleef in slaap vallen tijdens de saaie lezing.
•
I was so tired, I almost nodded off at my desk.
Ik was zo moe, ik viel bijna in slaap achter mijn bureau.