A person who likes to take drugs, mainly heroin. They look all fucked upp.
Me: WTF! Get out of my backyard! Fucking Yonkie!
Yonkie: I am not a yonkie! *Sniff* I just like the feeling of empty syringe.
Me: Yeah right! And what's that? I'm gonna tell you, that's HEROIN, FUCKING YONKIE!
1) A combination of "yuppie" and "indie" sensibilities. 2) A hipster with a lucrative day job.
Too profitable to garner the "independent" label, The Decemberists are America's foremost "yindie" band: A group that produces music that's perfect for playing air guitar while sipping a latte in your Ethan Allen leather recliner.