turn on
US /tɜːrn ɑːn/
UK /tɜːrn ɑːn/

1.
encender, activar
to start the flow or operation of something by means of a switch, button, or other control
:
•
Could you please turn on the lights?
¿Podrías por favor encender las luces?
•
I need to turn on my computer to check emails.
Necesito encender mi computadora para revisar los correos electrónicos.
2.
3.
atacar, volverse contra
to attack or become hostile toward (someone or something)
:
•
The dog suddenly turned on its owner.
El perro de repente atacó a su dueño.
•
The crowd turned on the speaker after his controversial remarks.
La multitud se volvió contra el orador después de sus comentarios controvertidos.