Meaning of wo

wo

Pronunciation: (wō), [key]
— pl. interj. wos,
  1. woe.

WO

Pronunciation: [key]
  1. wait order.
  2. War Office.
  3. Warrant Officer.

w/o

Pronunciation: [key]
  1. without.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.