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1.
Contraction formed by the words "Yeah, OK"
- Shall we have lunch now?
- Yeak
by rayden33 January 19, 2011
 
2.
the act of spraying saliva that's emitted from the salivatory gland underneath the tongue.(central Indiana origin) syn. snake (southeastern Kentucky origin)
"dude, did you just yeak on me?"
by shcsmu December 01, 2009