He asked her to pledge the house as security for a loan.

他要她抵押房子作为贷款担保。

《柯林斯英汉双解大词典》

Something given as security for a loan; a pledge or guaranty.

担保品为合同安全起见而抵押的物品；

youdao

As for the capability of company, company law should relax the limitation to the capability of company for providing a loan, but should totally forbid giving company assets as security of debt.

在公司的权利能力方面，我国《公司法》应该从法律上放宽对公司对外贷款能力的限制，并且全面禁止公司对外实施担保。

youdao

Because over the course of a year, there is a danger that the bank that you've borrowed from - and is holding your assets as security for the loan - could go bust.

BBC: Where to find bank stress