1) Second in command, next in
authority to another person. It's used for people who are
one step away to the highest authority.
2) Someone whose head is disproportionately narrow in comparison with the rest of their body.
“Vice Head, the Head General has sent us to you for further
instructions.”
Person 1: “Yo man, you see that skinny-headed guy
over there?
Person 2: “
Yeah man, that guy is totally a vicehead.”