turn in
US /tɜːrn ɪn/
UK /tɜːrn ɪn/

1.
acostarse, irse a la cama
to go to bed
:
•
It's getting late, I think I'll turn in.
Se está haciendo tarde, creo que voy a acostarme.
•
He usually turns in around 10 PM.
Él usualmente se acuesta alrededor de las 10 PM.
2.
entregar, presentar, rendirse
to hand over or submit something, especially to an authority
:
•
Please turn in your assignments by Friday.
Por favor, entrega tus tareas antes del viernes.
•
The suspect decided to turn himself in to the police.
El sospechoso decidió entregarse a la policía.