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1.
n. An Orthodox (Jewish) girl. These chicks drive secular guys crazy because of the alluring appeal of their perceived innocence. Synonyms include dox, nash and denim skirt.
"Damn, i wish i could get some of that O-girl action!"
by The Raging Bull February 20, 2005
 
2.
Slightly more frum or observant then a MO - Girl.
Randy: Tova, you have my stamp of approvel as an O-girl.
Tova: Yay!
by Brown Eyed Girl June 07, 2005