mother lode

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mother lode

n.
1. The main vein of ore in a region.
2. An abundant or rich source: a mother lode of information.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

mother lode

n
(Mining & Quarrying) mining the principal lode in a system
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

moth′er lode`


n.
1. a rich or important lode.
2. an abundant source or supply.
[1855–60]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mother lode - the main vein of ore in a deposit
lode, load - a deposit of valuable ore occurring within definite boundaries separating it from surrounding rocks
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