WO - definition of WO by The Free Dictionary
https://www.thefreedictionary.com/WO
( wəʊ) n, pl wos an archaic spelling of woe WO abbreviation for 1. (Military) War Office 2. (Military) Warrant Officer 3. (Telecommunications) wireless operator Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 WO or W.O., Warrant Officer.
DA: 24 PA: 68 MOZ Rank: 36