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Abbreviation for the popular author of the Harry Potter series, J.K. Rowling. Is mostly used by fans during net speak instead of typing out her entire name.
"Oh! JKR just updated her site!"

"I hate JKR, she killed my favorite chracter!"
by Jenn-O-Mac August 01, 2005
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John Kyle Rouse; husband of Lara Rouse; a person who loves landing strips
It's a good thing he's J.K.R., otherwise he may not like that landing strip you got goin' there, Lara!
by Purple Teamers September 19, 2003
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3
an abberviation for the word 'joker'. mainly used by chavs when decribing a person who is funny.
"omg, that dude.....wot a jkr"
by Anti-Chav Rally 2005 June 10, 2005
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