The outright wilin' out of a single person or group of people. Can be used as verb, adjective, noun, etc. Basically can replace any word in a sentence.
"2 Bottles of MD 20/20, thrash it up with Weston."

"THRASHTHRASHTHRASH IT UP."

"Talk trash, get thrashed."
by DjThrasher May 5, 2009
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A style of metal derived from speed metal like Motörhead and Judas Priest, influenced by hardcore punk such as Discharge and Bad Brains. Faster and more focused on rhythm than traditional heavy metal; the guitar riff is the absolute center of thrash metal, and many thrash bands (Dark Angel in particular) are famous for cramming as many riffs as they can into every song. Lyrics are primarily sociopolitical/(anti-)religious, or focused on mindless violence (often tongue-in-cheek); vocals have the widest range of any metal genre, from hardcore punk shouts to melodic singing to death metal growls.

Thrash began in the early 80s; depending on who you ask, the first thrash band was Metallica, Exodus, Overkill or even Venom. Thrash is best enjoyed by headbanging or moshing.
Bay Area thrash: Metallica, Testament, Death Angel, Heathen
East Coast thrash: Anthrax, Overkill
German thrash: Kreator, Sodom, Destruction
Modern thrash: The Haunted, Dew Scented -OR- Toxic Holocaust, Hypnosia (differing schools of thought)
by Pyrus August 27, 2004
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The most ass kicking form of music on this planet.
(Literally too,you're bound to end up with a big headache after all that headbanging)
Iced Earth,early Metallica,early Megadeth,Slayer,Kreator.
by Uberdeth November 20, 2003
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Like head banging only better and more fun..
You get your arms T-rexin' and move them rapidly and head bang while whipping your hair around .
may appear like your having an epileptic seizure
Head banging with more hair flipping, arm moving and gracefulness ... "Thrashing it out"
by mewmeow April 29, 2012
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Giving hard sex to woman. Having hard sex with yourself. Wild passionate sex where the thrashee cums out of it very satisfied.
I was thrashing her so hard that it woke up her neighbors across the street.
by sonicturkey March 18, 2006
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A violent-sounding alternative to beat. Gives the same effect, but more so.
I thrashed yo ass!


I thrashed you at the game of tennis.


.....thrash my kids!!!!!


I shall thrash you down with my cock.
by Kung-Fu Jesus April 30, 2004
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Rail enthusiasts use this term to describe locomotive engine noise. "Thrash" is greatly appreciated - the louder the better, and this is why enthusiasts often risk life and limb by sticking their heads out the windows of trains to sample it.
The thrash from that Class 37 pulling out of Wolverhampton was hellfire!
by Splee August 19, 2004
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