The act of
threatening to hurt, or ravine, a person. Basically the threat of putting someone into a ravine in a hurtful way.
This is a phrase commonly used by an angry person who intends to do harm to another much nicer well tempered person.
To destroy and ruin someone. This can either be in a physical fight, or in a sexual rapey
Bill Cosby sort of way. To be ravined is to be stripped of all humanity and be left homeless and beaten to shit.