英式:[ˈræthəʊl]
美式:[ˈrætˌhoʊl]

n.被鼠咬成的洞;鼠穴

His last sum of money went down the rathole when he tried to save an old friend from bankruptcy. 他在企图挽救他的老朋友免遭破产时白费了他最后一笔钱。