A small, cone shaped, rolled up strip of cardboard which is placed at the mouth-end of a joint, often made out of the little flap on rizla boxes. A roach serves various purposes, it;
- Stops your weed fallin out
-If someone bums it (slobers on the end) it stops the soggy paper from falling apart
-It gives your spliff a standard cone shape, which is almost impossible to achieve without a roach
'Aye yo man, iz u got a roach?'
'For real' *rips strip off rizla box lid

'I smoked that spliff right down to the roach'
by bOnGwAtEr September 21, 2003

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A roach is the reminisce of a smoked joint. Once a J becomes the roach it can become very difficult to hit and it is best to usually give it to the "roach master"

A roach master is someone who can hit the roach no matter how small it gets and commonly sells cigarettes for a dollar.
Parker: "dude i don't think this joint is lit anymore, its the roach"

Lev: "dude give it to the roach master!"
by voornmaster February 24, 2011

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N A term used in car sales meaning horrible credit, A person who never paied anyone there whole life and now wants to try and not pay for a car.
Man my customer is 5 months behind on his house note and in collections for all his credet cards man hes a real roach
by Un10nCarb1d4 July 06, 2009

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roach (noun)

An individual, in particular a user of an Internet group chat or message board, who openly lurks conversations but does not participate.

roaching (verb)

The action of lurking a conversation to everyone's knowledge.
1. Scott, we see you lurking, stop being a roach.
2. Scott clearly read our messages, he's just roaching like usual. Typical roach.
by mally.bear June 03, 2016

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A disgusting male/female/other that never bathes and is really ugly.
Did you see codee and ananda? They are roaches!
by unknownlolyouroach March 29, 2014

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england:slang term for rolled-up piece of cardboard put in the mouth end of a joint to catch tar which is produced by tobacco rolled in the joint.

america:usually means the end of a joint which can be re-used because there's still some weed in it. this occurs because in america, joints aren't rolled alot with tobacco and so don't need a filter.

not related to weed: a small freshwater fish.
-dude, you rolled this roach way too tight, i can't smoke this shit.
-well next time roll your own fucking spliffs, you retard.

-sir, we found marijuana roaches in your apartment
-so what, i smoke pot, what is that a crime?
-err...yeah

-i just caught a roach!
-wtf are your on about?
-the fish, you fuckhead
by Nicolo C April 18, 2011

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n. Car Sales: The most vile form of sub-human rubbish; ever to defile a dealership show room. They often arrive in beat up, stinky, trade-in's that smells like dirty diapers and animal urine. Always brings along their unruly, filthy, offspring when attempting to purchase a vehicle. Cannot purchase because the credit is horrific, and never have money down. A complete waste of time!
Man, I cannot beleive I got stuck with another Roach today. I getting tired of these people who cannot buy cars!
by danth666 September 22, 2009

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