1 definition by The-Dolphin

1
A unit of gold in jewlery. Seen as a very good high quality type of gold, it is used to describe multiple objects ,as high quality, from cars to women.
A popular phrase using 18K is "18K, all the way"
"Dude, that chick is hella 18K!"
by The-Dolphin February 18, 2009
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