attorney
/əˈtɜ:nɪ; ə`tənɪ/ n
1 person appointed to act for another in business or legal matters （业务或法律事务上的）代理人
power of attorney, ie authority to act as attorney 代理权
a letter of attorney, ie one giving sb this authority 授权书.
2 (US) lawyer, esp one qualified to act for clients in court 律师（尤指有资格代表当事人出庭者）
a district attorney, ie the public prosecutor for a particular region 地方检查官.