nest egg


noun

money saved and held in reserve for emergencies, retirement, etc.
a natural or artificial egg placed in a nest to induce a hen to continue laying eggs there.

Origin of nest egg

First recorded in 1600–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for nest egg

nest egg

noun

a fund of money kept in reserve; savings
a natural or artificial egg left in a nest to induce hens to lay their eggs in it
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