What it means
A nest egg is money you've put aside for later and you're not meant to blow it on takeaways, weekends out, or random shiny nonsense. It's your little financial cushion sitting in savings or investments for real-life drama like emergency bills, a house deposit, or retirement. Sounds dull till life starts swinging chairs, then it feels gorgeous.
Usage examples
"I’m trying to build a nest egg for the apartment deposit, but somehow it keeps turning into Friday pizza, a couple of beers, and regret by Monday."
"They built up a tidy nest egg over the years for the kids' education."
"We’re not touching that money, mate, that’s the nest egg for when the roof decides to start leaking at the worst possible moment."
"She’s been quietly building a nest egg from every pay cheque, proper grown-up behaviour even if it feels a bit boring."
"I've got a tiny nest egg tucked away now, nothing flashy, just enough to stop me fully panicking if the car starts acting possessed."
Where it comes from
The phrase comes from farming. People would leave a real egg, or sometimes a fake one, in a hen's nest to encourage her to keep laying. From there, nest egg moved into money talk for a small sum kept back to help something grow, then widened into savings for the future.
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