nest egg

plural nest eggs

1. A natural or artificial egg placed in a bird's nest, to encourage the bird to lay its own eggs there.

   My improvement relates to artificial eggs composed of a substance which is offensive to insects, the object being to render the same effective, not only as a nest-egg, but also as a destroyer of vermin.

   1879, Patent No. 211,363, issued Jan. 14, 1879 to O. F. Woodward for a Nest-Egg

2. figurativelyA saving; a reserve of money.

   Over time, they accumulated a tidy nest egg and retired comfortably.

   3 more examples

   When Mrs. Carey was married she had three hundred pounds, and this money, carefully watched, had been used by her to meet any unforeseen expense, any urgent charity, or to buy Christmas and birthday presents for her husband and for Philip. In the course of years it had diminished sadly, but it was still with the Vicar a subject for jesting. He talked of his wife as a rich woman and he constantly spoke of the "nest egg".

   1915, W[illiam] Somerset Maugham, chapter XXXIX, in Of Human Bondage, New York, N.Y.: George H[enry] Doran Company, →OCLC

   This is just like "Easy Rider." Except, now it's our turn. I mean, we can drop out and we can still have our nest egg!

   1985, Albert Brooks, Lost in America (motion picture), spoken by David Howard (Albert Brooks)

   Last year, Elliot Liebman, a 30-year-old musician in Austin, Texas, began investing part of every paycheck in some of those currencies, hoping to build a nest egg. Of his $10,000 investment, about $3,000 remains.

   2022 June 29, David Yaffe-Bellany, “Crypto Crash Widens a Divide: ‘Those With Money Will End Up Being Fine’”, in The New York Times, →ISSN

3. An egg squash.