mortgage       
 noun [ C ] uk/ˈmɔː.ɡɪdʒ/ us/ˈmɔːr.ɡɪdʒ/
 (尤指购房的)按揭,抵押贷款
an agreement that allows you to borrow money from a bank or similar organization, especially in order to buy a house, or the amount of money itself
  They took out a £40o,000 mortgage (= they borrowed £40o,000) to buy the house. 他们借了4万英镑的抵押贷款来买房子。 
 a monthly mortgage payment 每月偿付的抵押贷款 
 - More examples
 - People who default on their mortgage repayments may have their home repossessed.
 - Having a big mortgage is a real drain on your earnings.
 - After falling behind with his mortgage repayments he now faces eviction from his home.
 - She got behind with her mortgage and the house was repossessed.
 - They were forced to give up their home because they couldn't pay the mortgage.
 
mortgage       
verb [ T ] uk/ˈmɔː.ɡɪdʒ/ us/ˈmɔːr.ɡɪdʒ/
 (房屋)做抵押贷款
to borrow money to buy a house
  Their home was mortgaged up to the hilt (= the full value of their home had been borrowed). 那所房子被完全抵押出去了。