Repurchase agreement (also known as a repo or Sale and Repurchase agreement) allows a borrower to use a financial security as collateral for a cash loan at a fixed rate of interest.

回购协议是指以有价证券作抵押的短期资金融通，在形式上表现为附有条件的证券买卖。

youdao

The item itself acts as the security or collateral for the loan.

VOA: special.2011.04.18

Now you did have to put up some security, some collateral, against that loan.

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But if the money were to come from the EFSF, well in those circumstances Finland has said it would fear that the money would be too much at risk of loss - so it is demanding collateral or security for its share of any such loan.

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