Definition of "troll" []

• To fish for by trailing a baited line from behind a slowly moving boat. (verb-transitive)
• To fish in by trailing a baited line: troll the lake for bass. (verb-transitive)
• To trail (a baited line) in fishing. (verb-transitive)
• Slang To patrol (an area) in search for someone or something: "[Criminals] troll bus stations for young runaways” ( Pete Axthelm). (verb-transitive)
• Music To sing in succession the parts of (a round, for example). (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Nocturne: Better yet did someone explain not all replies (and insults) were aimed at her Michael Chandra: Oh and did someone explain the term troll?"
• "Wow, the troll is actually targeting Breast Cancer and Earth Day?"
• "Seems Ginger or another troll is annoyed, and has her/his finger on the down button …."