There are 2 definitions of troll in English:

troll1

Syllabification: troll
Pronunciation: /trōl
 
/

noun

A mythical, cave-dwelling being depicted in folklore as either a giant or a dwarf, typically having a very ugly appearance.
More example sentences
  • They showed all the mythological creatures that here existed, unicorns and flying horses, fauns and mermaids, elves and trolls, giants and dragons and many more beautiful and dangerous creatures she had never seen.
  • Throughout the ages, legends have always been richly embroidered with fantastic creatures; fairies and elves, trolls and giants, dragons and gryphons, phoenixes and shape-shifters.
  • For those of you unfamiliar with J.R.R. Tolkien, prepare to enter a land where humans share the earth with goblins, trolls, elves, dwarves, dragons and, of course, hobbits.
Synonyms
goblin, hobgoblin, gnome, halfling, demon, monster, bugaboo, ogre

Origin

from Old Norse and Swedish troll, Danish trold; adopted into English from Scandinavian in the mid 19th century.

Definition of troll in:

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Word of the day dinkum
Pronunciation: ˈdɪŋkəm
adjective
(of an article or person) genuine, honest, true

There are 2 definitions of troll in English:

troll2

Syllabification: troll
Pronunciation: /trōl
 
/

verb

[no object]
1 informal Make a deliberately offensive or provocative online posting with the aim of upsetting someone or eliciting an angry response from them: if people are obviously trolling then I’ll delete your posts and do my best to ban you [with object]: you folks taking this opportunity to troll me, you really need to reassess your values in your life
More example sentences
  • The company in Los Angeles is but one of several companies that hire people to troll Internet chatrooms and newsgroups posing as clients' fans.
  • Somehow, we're trolling him on our own website, according to his crazy logic.
  • It looks like the site is still being trolled by right-wing reactionaries trying to stir the pot instead of educate.
2Fish by trailing a baited line along behind a boat: we trolled for mackerel
More example sentences
  • When we got to the area where the birds were we could not see much evidence of fish so we just stuck the lines out and trolled for a few minutes.
  • Preferred fishing methods are trolling with lures or baits, bottom fishing, jigging, chumming, and spin casting.
  • They had caught large fish from both the shore and whilst trolling out in the boat.
2.1Carefully and systematically search an area for something: a group of companies trolling for partnership opportunities [with object]: I spent tonight trolling the Internet for expensive lighting gear
More example sentences
  • They spend hours scouring the wires and trolling for trade partners in search of the final piece in a championship run.
  • The company, trolling for more such bargains, declined to comment.
  • Search firms have long trolled the industry's executive ranks, often unsuccessfully, as financial stability and employer loyalty kept individuals in place.
3 [with object] Sing (something) in a happy and carefree way: troll the ancient Yuletide carol
More example sentences
  • And when he had supped the Old Soldier trolled The song of youth that never grows old.
  • After this the parting song would be trolled out, and the last of the revellers would depart.
4 [no object, with adverbial of direction] chiefly British Walk; stroll: we all trolled into town
More example sentences
  • Do I go home after work, walk and feed Edward then leave him alone again and troll back into town?
  • We were trolling along rather sedately down one of those country lanes that probably don't exist anymore when we spotted blue helmets bobbing up and down over the hedgerows (which certainly don't exist anymore).
  • There were numerous supposed celebs and/or film industry people trolling along the road, the occasional cheer from the crowd and camera flashes going off left, right and centre.

noun

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1A person who makes a deliberately offensive or provocative online posting.
More example sentences
  • Administrators can avoid criticism by the time-honoured tactic of shooting the messengers - labelling them trolls, then banning them.
  • I'll reserve judgement on whether your post is a troll.
  • Whacking trolls is, for some that website's editors, a big part of why they keep coming back.
1.1 informal A deliberately offensive or provocative online posting.
More example sentences
  • This has absolutely nothing to do with trolls, nasty emails or whiny posting.
  • Or is this a disaster waiting to happen in the form of massive comments spam, trolls, and other blog delights?
  • After this idea was posted on the blog, the number of trolls diminished to almost zero.
2A line or bait used in trolling for fish.
More example sentences
  • Fifteen salmon caught for the month of March and all fish were on the troll.
  • A few anglers are taking fish on the troll, but fly fishing is virtually at a halt.
  • Whether you're using a troll, small lure on lead core line or a lure-and-worm combination, you'll find trout favoring certain areas of a lake.

Origin

late Middle English (in the sense 'stroll, roll'): origin uncertain; compare with Old French troller 'wander here and there (in search of game)' and Middle High German trollen 'stroll'.

Derivatives

troller

noun
More example sentences
  • By that definition, Darren, absolutely anyone with a website must be a troller too.
  • In some places (such as waters off US, Canadian, and First Nations' territories) disputes arise from not being able to tell even the countries of origin of fish caught by open-ocean trollers.
  • I have worked on both gill-netters and trollers, and I know that the disagreements and misunderstandings between their adherents are deep and long-standing.

Definition of troll in: