WordNet (r) 3.0 (2006):
GPO n 1: an agency of the legislative branch that provides printing and binding services for Congress and the departments and establishments of the federal government [syn: United States Government Printing Office, US Government Printing Office, Government Printing Office, GPO]V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
GPO Group Policy Objects (AD, GPO)