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12.
A strange unknown creature that is sent to fight off the evil minions from inside you
Allright were outnumbered, SEND IN THE YONK!!!!!
by theyonkmaster April 01, 2011
 
1.
An extrememly long time. (noun)
Dude, I haven't spoken to you in yonks!
by HLNT October 19, 2004
 
2.
British Slang, Measurement of Time;

1) The unit of 'Yonk' is known to be exactly 3 Months and 13 Days.

--> Used to describe a long period since you last saw someone or something. Usually termed 'Yonks' rather than a 'Yonk'.
1)
BOB: "Gee Willy, I haven't seen you for Yonks!"
WILLY: "Yeah, must be about 3 Yonks actually."
by Stuart Fletcher November 10, 2004
 
3.
a long time
I went out with her for yonks
by dilbert scrunchie May 14, 2003
 
4.
a very long time, usually a number of years
"I've been mad for fucking years, absolutely years, been over the edge for yonks, been working me buns off for bands..."
-Pink Floyd, Dark Side of the Moon (Speak to Me)
by Chris August 25, 2005
 
5.
Many years. Ages.
I've been living in New York for yonks now
by Mark D Smith January 06, 2004
 
6.
a long period of time
I waited at the restaurant for him for yonks and yonks
by melissa May 25, 2003
 
7.
A long time - too long to contemplate!
The quote in Floyd is closer to this: 'I've been mad for fucking years, absolutely years, I've been over the edge for yonks; it's working with bands so long, I think - crikey!'
by AKJH November 23, 2007