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1.
The Australian nickname meaning cowgirl.
Wow... that's one fine Jillaroo.
von cowgirl_tater 21. Juni 2004
 
2.
1. An exstremely unattractive or "undateable" guy
2. Someone that one must avoid flirting with at all costs
3. Male who tends to spend most time alone on the computer
4. Opposite of a jackaroo
Girl #1: Eww! Rachel check out that jillaroo!
Girl #2: Yea Kaitlin, he's totally undateable!
von kldsjiaehr787 13. Februar 2009