noun. (1) a really cool place to go hang out, largely because it is inhabited by L. Ruhling and M. Hunter, who are awesome kids. Parties in the Commonwealth are often disbanded within 5 minutes of their start time because the raging is too intense.
(2) the scene of countless second semester 2011 parties
Hey, do you wanna go blow some shit up in the Commonwealth? I heard they're throwin' down tonight.
Did you hear about that one kid who vommed everywhere in the Commonwealth? He couldn't handle the madness.