Verb.

(1) To screw someone over; scam.

(2) To inflict severe injury upon someone as leverage to facilitate the extortion of money.

"Shamrock" is most frequently encountered in the passive, as in, "you have been shamrocked." (Origin: Shamrock Towing, a notoriously unethical business in the greater Columbus, Ohio area, ca. 1957)
(1) After paying $115 for the predatory towing of his car, Willis figured out he'd been shamrocked and called an attorney.

(2) "You didn't pay Vinnie your protection this month?! Buddy, you are sooo shamrocked!"
by Carl Willis April 28, 2004
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(n.)Anything that is passed off as being true Rock n' Roll, but which a majority of people believe otherwise. Fig 1. Limp Bizkit. See also: Creed.
The bar was playing Creed? Now that's one kind of shamrock I don't want on St. Patrick's day.
by jordan March 17, 2005
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(noun) slang, an underage female who not only insists that she is the age of majority, but tries at great lengths to snare older men for experience.
R. Kelly is innocent, he was merely the victim of a professional shamrock.
by plbplbplb November 4, 2008
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when you get so stoned off that green leaf on saint pattys day.
Im getting sooooo shamrocked after work.
by GangaGod March 17, 2017
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Altered Humboldt County strain of quality Marijuana, grown from the plant "Pretzels" in Northern California. Known for its advanced germination-mid vegetation cycle, into an outdoor beast in early vegetation.
"Pretzels just yeilded the SHAMROCK bud."
by nich March 17, 2004
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Normal of hispanic origian much like emo and goth except on crack. They are complete jackass's like johnny knoxville. They normaly hate every thing thats not like them. Except hispanics and asians and anime. Wear black and green(like Link) from zelda. There rockers(mostly, only hardcore and metal). I like Industrial Metal alot. And my friend Joe a.k.a Haku, likes metal and alternative metal like a true shamrocker. One more thing.... We better then you!!!!!!!!!!
shamrocker: Hey you fucking emo bitch get a life
Emo bitch: im so gay and lonely
Shamerocker: fucken popers think they are so cool they just gay in denail
poper:don't talk about me and my gay lovers
by Salvador de Shamrocker September 5, 2006
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