词典释义：
the charging of real (or personal) property by a debtor to a creditor as security for a debt (especially one incurred by the purchase of the property), on the condition that it shall be returned on payment of the debt within a certain period
（尤指因购买地产所需的）抵押。
a deed effecting such a transaction
抵押契据。
a loan obtained through the conveyance of property as security
抵押贷款，按揭
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I put down a hundred thousand in cash and took out a mortgage for the rest .我付了十万元现金，余额用抵押贷款支付。
convey (a property) to a creditor as security on a loan
将（房地产）抵押贷款。
〈喻〉 （为眼前好处）使承受（未来）风险
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some people worry that selling off state assets mortgages the country's future .有人担心出售国有资产是拿国家前途作抵押。
"late Middle English： from Old French, literally ‘dead pledge'， from
