look up any word, like ratchet:
 
1.
up to par, top notch, on point, right in time, good
I habe a pedicure so my feet are on key
by J Jones June 10, 2006
7 1
 
2.
originated in putney, sydney, australia. is used when someone displays behavior or acts in a stupid mannor
haha what an onkey lar
by c7 April 13, 2005
5 4
 
3.
a cool person,and if some people don't think so .....theyre losers!
Dlonk is an on key,that person is a On key
by lovedbyeme October 13, 2007
1 1