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1.
Acid Etch bath is an acidic solution used by graff writers in mops and other assorted markers to create a handstyle on a glass surface, in which the acid eats into the window, making that handstyle/tag unbuffable.
I went up and down down market street and etched the shit outta every building window I saw
by Hamydeez April 19, 2004
 
2.
1 dodgy, sketchy, scary.
2 freekishly or scarily good.
Background - developed from sketchy on the northern beaches of sydney.
1 "That Texas Chainsaw movie is so etch"
2 (tone in awe)"etccccccccccch"
by Greenie June 22, 2004
 
3.
A word used to describe anything scary or weird, etc.
Used commonly by teenagers.
Guy 1: So then he jumped out and killed her!
Guy 2: Ohh etch!

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Guy 1: Then he told me he wanted to kiss me. It was so etch.
Guy 2: He's so etch!
by Sarah1192 November 05, 2007
 
4.
something that is seriously wrong that like soils your mind. Or something that is said that you dont want to think about.
"hey uther imagine our science teacher in a porn flick"
"um ETCH DUDE!!!!!!!!!!"
by THE SHAGLE MASTER September 05, 2003
 
5.
Bad, horrible, not cool, homosexual.
The thought of you naked is ETCH!
by uther August 16, 2003