improvised, as in freestyle raps (dome=head).
"bitch you gone / I freestyle, I'm off the dome"
-lil flip
by scose January 18, 2005
Top Definition
Totally amazing, incredible, and mind-blowing.
That concert was off the dome!

My new screenplay is off the dome!

My Jabba the Hutt socks are off the dome!
by Rick Herringbone April 09, 2016
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