OGA
n.— «The Taguba report described how “ghost detainees” were brought to the military police (MP) unit running several jails in Iraq by OGAs (military jargon for other government agencies, often a reference to the CIA).» —“Jailed Iraqis hidden from Red Cross, says US army” by Julian Borger Guardian (U.K.) May 5, 2004. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...