To put out a blunt or spliff or what have you when it is a roach. Also, it is common to trim the roach to a level of desired neatness for preservation.
Person One: Anyone want to hit this?
Person Two: Nah its done, just roach it.
by christopolous October 21, 2005
The small, remaining ends of marijuana cigarettes are called roaches. Avid marijuana users often save the ends for a rainy day, as they have concentrated amounts of resin and THC. "Roaching" is the act of gathering these ends, smoking them, and getting extremely high.
We ran out of weed, man, so we're roaching.
by Ophelia Corsinicus October 21, 2005
1. In England, joints are rolled with tobacco to help them burn. The tobacco leaks tar, which can cover and burn the smoker's lips and fingers. A roach, in England, is a small piece of cardboard, often torn from the pack of rolling papers, which is rolled and placed into the mouthpiece of the joint. This makes it easier to hold and also makes it possible to smoke the entire joint without the aid of a roach clip.

2. In America, people tend not to smoke joints using tobacco, and what is called a roach in England is termed a filter in America. The roach is the end of the joint which cannot be smoked without a roach clip, because the smoker's fingers would be burnt. The roach contains the most resin and is stronger than the rest of the joint because THC smoke has passed through and settled on it with each inhalation. A roach is often saved and smoked in a joint made from other roaches, which is much stronger than a normal joint.
1. "Put the roach in, I won't smoke without it"

2. "Save the roach, we can smoke it with some others later on"
by Cunny June 7, 2004
when something has been utterly destroyed or totalled
Whoa dude you totally roached this ___.
by stonah December 9, 2003
Verb - The act of begging or looking for handouts. Broke people who never have anything and always want what you have.
If there's one thing I can't stand is roaching ass women at the club always trying to get a free drink.
by Donae' November 6, 2007
1. The end of a joint.
2. (British slang) The bit of rolled-up cardboard you put at the mouth-end of a joint.
by hux May 23, 2003
A dirty person. Someone who smells bad,and likes to be shirtless in public this person comes from slums/ projects. Basically a dirty wannabe thug.

Most think they're funny
by tzlawoops May 29, 2014