1) A fantasy creature with no single definition. Usually large, ugly and nasty...except when it's small, cute, and friendly. Often lives under bridges.

2) An ugly little plastic doll with big hair.

3) One of the five Horde races in World of Warcraft. Tall, leggy, and blue, with three-fingered hands and two-toed feet; also has tusks and a Caribbean accent.

4) (verb) To go fishing.

5) (verb) To act as an example of the Greater Internet Fuckwad Theory; derived from definition 4, on the theory that the person is "fishing" for attention. This can also be a noun, meaning someone who does just that.
1) According to TVTropes, all trolls are different.

2) My aunt collects troll dolls.

3) My troll shadow priest will melt your face!

4) They're out trolling the river.

5) Oh, great, someone is trolling the forums again. Where did all of these trolls come from, anyway?
by Qit el-Remel May 9, 2009
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Being a prick on the internet because you can. Typically unleashing one or more cynical or sarcastic remarks on an innocent by-stander, because it's the internet and, hey, you can.
Guy: "I just found the coolest ninja pencil in existence."
Other Guy: "I just found the most retarded thread in existence."
by EREALLY GUD DEFUNITION MAKUR November 12, 2004
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A troll in the sense of an internet troll has many different meanings. Not all trolls go to a message board and spam it with flames, racism, and Goatse before getting banned 5 minutes later. Trolling is a hobby in the same vein as prank phone calls, and the true objective of trolling is to be clever and creative in getting a reaction out of the troll victims.
Skilled trolls especially like trolling large-scale websites such as MySpace or LiveJournal where it is harder to get banned. Trolling a site such as GameFAQs is more difficult, as the TOS is very strict and the moderators are harder on trolls.
Common victims of trolls: liberals, hippies, peta, gay rights activists, otaku, furries, harry potter fans, etc

Skilled trolls from LJ: heavenablaze, gunlord, oni+, omg_a_terrorist, bloodlent, abcuqrc, chessnut1134
by Oni-Unit December 28, 2005
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The delicate art of fucking with people's emotions or perceived conception of reality, logic or social norms either over the internet or IRL by adopting butthurtful behaviors and/or speech with the sole purpose of lulz. What is true to say though is that trolls are insecure people who want to boost their hurt confidence (often done by other trolls) by asserting their dominance over people they consider sensitive or at least exploitable enough to being hurt. Otherwise, trolling can be viewed as exercising overkill in verbal or visual sadism.
ENCYCLOPEDIA DRAMATICA. That is what you only need to know if you want to know what trolling really is all about.
by CYFAWZ October 23, 2011
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Being a Valorant Tier 1 pro team and having a strat on Fracture defense, where you leave one teammate alone in tower to die for no fucking reason
TMV: "Damn, this is even worse than the Aztec sacrifice, EG are just straight up trolling"
by ItsaMeekay April 3, 2023
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Ben: I trolled a burns victims ward about my dead baby getting burnt alive you shoulda seen there face
Lucy: but your online how can you see there face
Ben: J3POOOOOOORDIQ Lucy
Lucy: what????
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While hated by most, these people are typically non-social for reasons beyond their control, and manage to get that one glimpse at society by eliciting responses from forum-goers who, nine times out of ten, think they know everything and that anything that goes against the norm is bad. There are of course the assholes who do it just for fun, but a lot of these people are suffering: people with manic (or often just plain old) depression, people with real issues in real life, or people who's real life isn't as cupcakes and unicorns as people on the internet assume.

I say this because I know people in real life who many would consider trolls, and they "troll" on forums because they receive no attention from their family and very little from anyone else. They are saints for putting up with it in real life, but it'd be unhealthy to pent up all their frustration. So what do they do? They speak out on the internet, often in obnoxious and annoying matters. The very fact that people respond to what they say is important to them, just because they get satisfaction in knowing that some people somewhere acknowledge their existence, and perhaps more importantly their opinion. Believe me, most trolls you see aren't "a poor excuse of a human being". Their lives in real life is worse than many could imagine. Everyone needs to vent sometimes.
Troll: WOW U FUCKS NARUTO IS FOR HOMOS ONLY.

Forum-goers: U poor excuse for a human being you need to die

Troll (in real life): Man, I don't really like Naruto. But no one knows that. No one in my life give a flying fuck about anything I say or do.
by a someewhat smart guy August 29, 2010
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