troll 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.