GBZ

Word Origin for GBZ

from G(reat) B(ritain) + Z (in place of G, which was already used in Guernsey)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012