Jib

a first-year man.—Dublin University.
or jibber , a horse that starts or shrinks. Shakspeare uses it in the sense of a worn-out horse.
the face, or a person's expression; “the cut of his jib ,” i.e., his peculiar appearance. That sail of a ship, which in position and shape, corresponds to the nose on a person's face.—Sea. A vessel is often known by the cut of the jib  sail; hence the popular phrase, “to know a man by the cut of his jib.”