trollfeed · verb1
Back-formation from trollfeeding or from troll (“person who makes or posts inflammatory statements in an attempt to lure others into combative argument”) + feed (verb). Compare feed the troll.
trollfeed · noun2
From troll (“person who makes or posts inflammatory statements in an attempt to lure others into combative argument”) + feed (noun). See also etymology 1.
Etymology from Wiktionary, CC BY-SA 4.0.