set on
US /set ɑːn/
UK /set ɑːn/

1.
soltar sobre, atacar
to cause a person or animal to attack someone or something
:
•
The guard set his dog on the intruder.
El guardia soltó a su perro sobre el intruso.
•
They set on him with sticks and stones.
Lo atacaron con palos y piedras.
2.
emprender, establecer
to begin a journey or course of action with a particular intention
:
•
They set on their journey early in the morning.
Emprendieron su viaje temprano por la mañana.
•
We need to set on a plan to address this issue.
Necesitamos establecer un plan para abordar este problema.