noun.
1. A trollfly is that annoying fly that seems to buzz only around your head, and nobody else's. Especially annoyig when one is in a group of people and the trollfly refuses to leave.
2. The fly that is buzzing around in one's vehicle.
Jon: *waves his hands trying to get the trollfly*
Steve: Dude what are you doing?
Jon: Its this damn trollfly!
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