verb/embesˈtiɾ/
to charge; to attack, especially to ram (up against); to pound (sexually penetrate vigorously)
“La Calchona se parece a una oveja de grandes lanas. Les sale al paso a los que viajan solos por el campo y les pide de comer. Si no le dan, los embiste hasta derribarlos y revuelve y pisotea.”
Probably from Italian investire (“to undertake”), which would make it a doublet of investir.