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A movment of the face and/or jaw whilst under the influence of ecstasy.

Many examples of this can be seen in nightclubs across the uk, a very rare case and example is someone who goes by the name of "brian" or "Gurn-tits" usually found in a night club called the krazyhouse. gurning on a an object to prevent his jaw from locking eg a shoulder of pork.
check out his gurn

does it look good when i gurn?

woah is he gurning on a leg of lamb?
by The gurn hunter July 28, 2008
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15
(verb). When a person suddenly begins to have strong cravings for or becomes incredibly desirous of something; like a particular food, person, drug, drink, sex-capade, etc. Unfortunately, due to circumstances, finances or other obstacles, these unlucky souls are usually are left unsatisfied, and are therefore left to "gurn." This craving is akin to what the French call, “La douleur exquise”- the exquisite pain of wanting someone (or something) that you know you can never have.
“It’s been three weeks since I have seen Greta, dude, and I am like, totally gurning for her!”

Or:
“So, I hate to admit it but, like, it’s always when I’m out of my stash that I gurn for it the most!”

Or:
"Paul loves the pain of it. He loves to deprives himself as long as he can stand to gurn and then he goes out on his jags."
by Flibberdigibbit April 30, 2013
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16
bud, green, weed, mary jane

born in cambridge, ontario, canada
smoke some gurn
by gurn lover January 18, 2012
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18
n. a big greasy burning poop, synonomous with gurd
by MJD June 02, 2004
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19
A carnivorous, crab-like alien found in the "Star Gurns" and "Great Conflict" series, several related works in progress by Micah Glenn of Star Gurn Enterprises.

Star Gurn Enterprises may be found at www.fascinate.us
by Micah Glenn February 09, 2004
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20
a student who is constantly studying simply for grades or to get into the "right college/grad school", not with passion or for the joy of learning.
geez, that kid is such a gurn.
by sluggo October 21, 2004
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