a shallow inlet of the North Sea between the N coast of the Netherlands and the West Frisian Islands: outer section of the former Zuider Zee. About 3861 sq. mi. (10,000 sq. km).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the part of the North Sea between the Dutch mainland and the West Frisian Islands
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