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1.
An ugly chick who will fuck anybody
Dude, I got so drunk last night i took some grimbo back to my room and nailed her!
by Adolph Oliver Nipples November 06, 2003
 
2.
combination of two words: Grim, meaning ugly. And Bimbo, meaning a girl with loose moral character and less than average intelligence.
I drank twenty beers last night and woke up with some horrible grimbo next to me in bed.
by Lou Stenspayce December 24, 2003
 
3.
An insult, meaning short, ugly, retarded and a various amount of other meanings that you can attach to the word Grimbo.
Rob: God Annette is SEXY
Ali: You'll never get her your such a Grimbo!
by Frost Shock February 21, 2010
 
4.
(n) A homeless person
Grimbo over there stuck his foam cup out and asked me if I could "spare some change, brudda?".
by Rod Munch August 11, 2004
 
5.
To be Grim. To obtain the highest level of grim.
Jake: "Whos so Grimbo?"
Jimbo: "Im not Grimbo, your Grimbo"
Jake: "Jimbo is so Grimbo"
by Patrick and Jake Mazard July 25, 2005
 
6.
K-Sull, word meaning careless of looks, life, or what other people think of him.
Dude grimbo's got some bomb trees
by ksull January 07, 2005