either ... or
B1
used when you are giving a choice between two or more things
Dictionary examples:
Either you learn to cook, or we'll eat cereal for dinner forever! (0.0)
Either you turn off that loud music, or I'll start singing along! (0.0)
Either you stop snoring, or I'll sleep in the bathtub! (0.0)
Either you leave now or I call the police! (19.7)