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A portmanteau of accident and collision.

Transitive verb: Two walking people encountering each other and attempting to avoid each other by side-stepping inadvertently in the same direction, provoking an apology and/or awkward feeling.

Noun: A walking encounter of two people who attempt to avoid each other by side-stepping inadvertently in the same direction, provoking an apology and/or awkward feeling.
I accilised with some woman in the mall this afternoon. It was really awkward.

He met her when they had an accilision.
by Fu Fu October 15, 2007
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