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2.
Being at the peak of a high from cannabis or other drugs.
"Dude are you stoned yet?"

"Ya dude I'm fuckin peaked"
by massworder February 11, 2012
 
1.
looking pale as a result of sickness..
hey brother you're looking peaked. are you ok?
by Gary Morris November 21, 2006
 
3.
peaked.. you peaked from coolest to complete total loser

"you used to be popular in high school, but i think you peaked"

by jadaxfuen January 05, 2008
 
4.
the feeling after ingesting copious amounts of pain killers
Dude I'm pretty peaked right now.
Do you want to get peaked?
Hey I've got some peaks, you wanna pop?
by floyd pockerton April 19, 2011
 
5.
to get lose your virginity
Jack peaked at a young age
by Harvey Schveenstein September 10, 2006