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An area on the top of a balding person's head that you can see thru, to their scalp, when the sun or any source of light shines on it.
Yo, why yo got the mini-bush....with the sun-roof on top tho! lol
by ABW May 22, 2008
a section of an automobile roof that can be slid or lifted open.
I have a sunroof in my car
by Archie L December 24, 2007
Is when someone slips a ruthie in your drink during daylights hours.
"How did he get that hot chick at the breakfast buffet?"

"He must have dropped a sunroof earlier"
by Mendo Local December 25, 2009