sumka na czarną godzinę Englisch:

My sister got a really well-paid job, so she soon built up a nice little nest egg.

I think the best thing to do is to put a nest egg away so you've got something for the future.

That was my entire nest egg.

She has a huge nest egg, so she doesn't have to work anymore.

Our parents consider the money from the sale of the house as a nest egg for their retirement.

Regular investment of small amounts of money is an excellent way of building a nest egg.