An exclamation to get attention. / A protest or reprimand. / An expression of surprise. / An informal greeting, similar to hi. / A request for repetition or explanation; an expression of confusion.

Vacillation.

Tending to rehabilitate. / For the purpose of rehabilitation.

Of a style of jackets, sweaters, etc. with a short zip (approximately a quarter of the height of the garment) descending from the collar.