Top definition
A rare mystical creature claimed to be fictional but highly sought after.

Similar to "unicorn", but used instead when two or more are joined in a friendship quest to find the mystical creature.
Mersades and Mike declared they would set out on a friendship journey to find the Yewnicorn.

The discovery of the yewnicorn would be a testament to friendships everywhere!
by Somethingdevine November 07, 2012
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