public school

英 [ˌpʌblɪk ˈskuːl]

美 [ˌpʌblɪk ˈskuːl]

n. 公学(英国，尤指英格兰，为13到18岁青少年开办的私立付费学校。学生常寄宿); (美国、澳大利亚、苏格兰及其他国家免费的)公立学校

Collins.2

牛津词典

noun

公学（英国，尤指英格兰，为13到18岁青少年开办的私立付费学校。学生常寄宿）
(in Britain, especially in England) a private school for young people between the ages of 13 and 18, whose parents pay for their education. The students often live at the school while they are studying.
1. He was educated at (a) public school.
  他出身英国公学。
（美国、澳大利亚、苏格兰及其他国家免费的）公立学校
(in the US, Australia, Scotland and other countries) a free local school paid for by the government

N-VAR （英国的）公学，私立寄宿中学
In Britain, apublic schoolis a private school that provides secondary education which parents have to pay for. The pupils often live at the school during the school term.
1. He was headmaster of a public school in the West of England.
  他是英格兰西部一所公学的校长。
2. ...the boy from the streets who went to public school.
  上过公学的一个街头小混混
N-VAR （美国、澳大利亚等国家的）公立学校，公办学校
In the United States, Australia, and many other countries, apublic schoolis a school that is supported financially by the government and usually provides free education.
1. ...Milwaukee's public school system.
  密尔沃基的公立学校体制

noun

a tuition free school in the United States supported by taxes and controlled by a school board
private independent secondary school in Great Britain supported by endowment and tuition