1. (noun)troll (Scandanavian folklore) a supernaturalcreature (either a dwarf or a giant) that is supposed to live in caves or in the mountains
2. (noun)round, troll a partsong in which voices follow each other; one voice starts and others join in one after another until all are singing different parts of the song at the sametime "they enjoyed singing rounds"
3. (noun)troll a fisherman's lure that is used in trolling "he used a spinner as his troll"
10. (verb)troll praise or celebrate in song "All tongues shall troll you"
11. (verb)troll speak or recite rapidly or in a rollingvoice
Definition of 'troll'
Webster Dictionary
1. (noun)troll a supernatural being, often represented as of diminutive size, but sometimes as a giant, and fabled to inhabit caves, hills, and like places; a witch
2. (noun)troll the act of moving round; routine; repetition
3. (noun)troll a song the parts of which are sung in succession; a catch; a round
13. (verb)troll to fish with a rod whose line runs on a reel; also, to fish by drawing the hook through the water
Definitions of 'troll'
The New Hacker's Dictionary
1. troll 1. v.,n. [From the Usenet group
alt.folklore.urban] To utter a
posting on Usenet designed to attract predictable
responses or flames; or, the post itself. Derives
from the phrase “trolling for newbies”
which in turn comes from mainstream “trolling”, a style of
fishing in which one trails bait through a likely spot hoping for a bite.
The well-constructed troll is a post that induces lots of newbies and
flamers to make themselves lookevenmore clueless than they already do,
while subtly conveying to the moresavvy and experienced that it is in fact
a deliberate troll. If you don't fall for the joke, you get to be in on
it. See also YHBT.
2. n. An individual who
chronically trolls in sense 1; regularly posts specious arguments, flames
or personal attacks to a newsgroup, discussion list, or in email for no
other purpose than to annoy someone or disrupt a discussion. Trolls are
recognizable by the fact that they have no realinterest in learning about
the topic at hand - they simply want to utter flamebait. Like the ugly
creatures they are named after, they exhibit no redeeming characteristics,
and as such, they are recognized as a lowerform of life on the net, as in,
“Oh, ignore him, he's just a troll.” Compare
kook.
3. n. [Berkeley] Computer lab
monitor. A popular campus job for CS students. Duties include helping
newbies and ensuring that lab policies are followed. Probably so-called
because it involves lurking in dark cavelike corners.
The use of ‘troll’ in any of these senses is a live
metaphor that readily produces elaborations and combining forms. For
example, one not infrequently sees the warning “Do not feed the
troll” as part of a followup to troll postings.
Definitions of troll 
Afrikaans: trol
Arabic: مارِد: مَخْلوق خُرافي
Bulgarian: трол
Brazilian: trol
Czech: trol
German: der Troll
Danish: trold
Greek: κακοποιό δαιμόνιο
Spanish: trol
Estonian: troll
Farsi: غول یا کوتولۀ ساکن غار و 
Finnish: peikko
French: troll
Hebrew: טְרוֹל
Hindi: वेताल
Croatian: trol
Hungarian: (mitológiai lény)
Indonesian: jin
Icelandic: jarðálfur, tröll
Italian: troll
Japanese: 伝説の怪物
Korean: (동굴이나 지하에 사는) 거인, (장난을 좋아
Lithuanian: trolis
Latvian: trollis
Malay: jin
Dutch: trol
Norwegian: troll
Polish: złośliwy gnom
Persian: غول یا کوتولۀ ساکن غار و 
Pashto: پرله پسی سندره
Romanian: spiriduş
Russian: тролль
Slovak: trpaslík, piadimužík
Slovenian: (hudoben)škrat
Serbian: trol
Swedish: troll
Thai: คนที่น่าเกลียด (มักหมายถึ
Turkish: trol
Taiwanese: (北歐神話中形象似人的)巨人，怪物
Ukrainian: троль
Urdu: ايک ديومالائي مخلوق
Vietnamese: người khổng lồ
Chinese: （北欧神话中形象似人的）巨人，怪物
