Top Definition
A small, floating, pink species of unicorn that hails from the video game Team Fortress 2. It can be easily identified by its general cuteness and peppermint horn, also by the blue markings on its back and yellow soles of its hooves. It is sometimes given to unicorn-loving girls by their video game-playing boyfriends as surprise gifts.
The Pyro pranced around with his best buddy Balloonicorn as he shot civillians with his rainblower in Team Fortress 2.
by unicornlady3 October 21, 2013

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