| 1. | money saved and held in reserve for emergencies, retirement, etc. |
| 2. | a natural or artificial egg placed in a nest to induce a hen to continue laying eggs there. |

| nest egg n.
|
nest egg
|
Nest Egg
A special sum of money saved or invested for one specific future purpose.
Investopedia Commentary
Examples of the purposes for which nest eggs are usually intended include retirement, education, and even entertainment (vacations and cruises). The main idea is that the money in the nest egg shouldn't be touched except for the purpose for which you saved it.
Related Links
Determining Your Post-Work Income
Six Ways To Maximize The Value Of Your 401(k)
Don't Forget The Kids: Save for their Education and Retirement
Introductory Tour through Retirement Plans
See also: Coverdell ESA, Education IRA, IRA, Mom and Pop, Pension Plan, RRSP