a large, long-range German cannon used during World War I.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any of three large German guns of World War I used to bombard Paris
Word Origin for Big Bertha
C20: approximate translation of German dicke Bertha : fat Bertha; named after Bertha Krupp, at whose works in Essen a very effective 42 cm mortar was made
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