look up any word, like bukkake:
 
4.
offesive slang term referring to anything related to emo, hardcore, screamo etc. can be used to describe pretty much anything or as a noun used in place of the genre.
1. "You ever heard of Burning Black Tears That I Cried?"
"Yeah, they're pretty shrill."

2. Look at that really shrill kid over there

3. I saw these kids listening to some shrill and fighting the air
by rsktod January 08, 2005
 
1.
The act of reaching high picthed sounds when in distress, getting excited, or just when being annoying. It can be used as a noun, verb, or anything else.
"MJ keeps shrilling around the house."
"Why doesn't someone tell her to shut up?"

"Don't get shrill with me, MJ."

"She shrilled the shit out of me."
by D-$$ December 20, 2009
 
2.
That one guy whose pretty chill

and quiet...
"Dude whose that guy?"

"Oh yeah, that's shrill. He's just doing his thing over there, he's calm as shit though"
by b4y-life November 18, 2013
 
3.
Other word for mushrooms of the phychedelic type.
did you score some shrills to light up my dome peice bro.
by "biff" jeremy anderson February 08, 2008