It means an amount of money, for example, public monies and tax monies.

表示一定量的钱财，例如：公款，税款。

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Public institutions will survive these cutbacks because state monies will continue to underwrite operating expenses.

公立院校将渡过这种削减的困难，因为州财政将同意继续承担办学费用。

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Lord Brooke said that the advisors had been effective in reducing violence, and "particularly effective in saving public monies".

BBC: Kinnock calls for global action on abuse of women

Clearly, the Obama administration picked losers, wasting hundreds of millions of dollars of public monies on bankrupt companies like Solyndra.

FORBES: What Obama Has Done, Not What He Says -- Matters

In my opinion such lack of clarity about what's in it for him from a state employee investing billions in public monies is unacceptable.

FORBES