Top Definition
Spelling of "SENIOR" used for the graduating Class of 2012. The "R" is replaced by "12" since the combination of letters resembles the final letter.
At a pep-rally, a group of legal and almost legal senior girls each wearing a letter or number on their shirt spell out: " S. E . N . I . O .12 " or "SENIO12"
by The BIGGEST Big MAC August 08, 2011

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