Top Definition
One who doesn't posses a brain. A pebble replaces the inside of their skull.
Yo you know that kid mike?
Yeah i heard hes a huge goddamn pebblebrain
I think one time he thought he was getting the ball
by Mike pebblebrain mcgee July 07, 2013

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×