(adj.) Used to describe someone or something that looks like it came from vosotros, ie. the middle of no where. It can also be used to describe something unused, gross, old or scary.
"Who's THAT dude? What a vosotrian!"
"You want to go see what's in that vosotrian old shed over there?"
"I just got back from visiting my family in North Dakota. It was pretty vosotrian..."