from The American Heritage® Dictionary of the English Language, 4th Edition
- An economic union of Belgium, the Netherlands, and Luxembourg, originally established as a customs union in 1948.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. an economic and customs union made up of Belgium, the Netherlands and Luxembourg; one of the precursors of the European Union
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a customs union comprising Belgium and Netherlands and Luxembourg
From the first letters of Belgium, Netherlands and Luxembourg (Wiktionary)