noun; zero derivation
a prank played on a college, which marks the presence of another college. “jack” has an established meaning “A small flag flown at the bow of a ship, usually to indicate nationality.” As a jack establishes the identity of a college, it is a logical extension.
Etymology : jack
Source : Signs advertising an upcoming meeting in which Lovett college plans its annual jacks on other colleges
Last modified: 10 June 2008