Definition of "VO"

VO

proper noun
1. Initialism of Royal Victorian Order.
noun
plural VOs
1. Initialism of voiceover.
2. Initialism of visiting order.
  Quotations
  Visiting a busy prison like Holloway can at first be intimidating to the uninitiated, especially as everyone else seems familiar with the procedure. A convicted prisoner must send a VO to anyone wishing to visit her.
  1998, Angela Devlin, Invisible Women: What's Wrong With Women's Prisons?, page 82