trust fund

American  

noun

1. money, securities, property, etc., held in trust.

2. a government fund administered separately from other funds and used for a specified purpose.

   a highway trust fund.

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trust fund British  

noun

1. money, securities, etc, held in trust

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Etymology

Origin of trust fund

First recorded in 1860–65

Example Sentences

The program’s trust funds are expected to run out of money by 2034, at which point benefits would be cut by about one-fifth, according to the 2025 Social Security trustees report.

From MarketWatch

Jennifer Baick, a vice president with Mercer Advisors, a nationwide firm, has a phrase she uses in such situations: “When you don’t trust, you trust” — as in, establish that trust fund.

From MarketWatch

There have been proposals over the years to allow the trust fund to invest in stocks, but they haven’t gained serious traction.

From Barron's

Pressure on Social Security’s trust funds add to the uncertainty.

From MarketWatch

Financing for reconstruction of Gaza following two years of war would come from a trust fund backed by the World Bank, according to the resolution.

From BBC