1. (有帽舌的)帽子,便帽
    A cap is a soft, flat hat with a curved part at the front which is called a peak. Caps are usually worn by men and boys.

    e.g. ...a dark blue baseball cap.
           深蓝色棒球帽

2. 制服帽
    A cap is a special hat which is worn as part of a uniform.

    e.g. ...a frontier guard in olive-grey uniform and a peaked cap.
           身穿橄榄灰制服、头戴大盖帽的边境哨兵

3. 使入选国家(足球、橄榄球、板球等)队
    If a sports player is capped, they are chosen to represent their country in a team game such as football, rugby, or cricket.

    e.g. Rees, 32, has been capped for England 23 times.
           里斯,32岁,曾经23次入选英格兰队。
    e.g. ...England's most capped rugby union player.
           入选英格兰国家队次数最多的橄榄球协会运动员

4. 国家队队员资格
    If a sports player represents their country in a team game such as football, rugby, or cricket, you can say that they have been awarded a cap .

    e.g. Mark Davis will win his first cap for Wales in Sunday's Test match against Australia.
           星期天对阵澳大利亚的国际锦标赛,马克·戴维斯将首次代表威尔士国家队出战。

5. 首次入选国家队的选手
    You can refer to someone who is representing their country for the first time in a team game such as football, rugby, or cricket, as a new cap .

    e.g. The only new cap is Llanelli's 20-year-old left-wing Wayne Proctor.
           唯一初次入选国家队的选手是来自拉内利的20岁左边锋韦恩·普罗克特。

6. (政府)限制(组织或地方议会的支出)，限定（预算）
    If the government caps an organization, council, or budget, it limits the amount of money that the organization or council is allowed to spend, or limits the size of the budget.

    e.g. The Secretary of State for Environment has the power to cap councils which spend excessively...
           环境大臣有权限定那些铺张浪费的委员会的支出。
    e.g. Nearly half of all local councils face being capped.
           所有地方议会有将近一半的开销将受到限制。

7. 瓶盖;瓶塞
    The cap of a bottle is its lid.

    e.g. She unscrewed the cap of her water bottle and gave him a drink.
           她拧开水瓶盖,让他喝了一口。

8. (妇女避孕用的)子宫帽
    A cap is a circular rubber device that a woman places inside her vagina to prevent herself from becoming pregnant.

9. 覆盖;把…罩起来
    If you cap one thing with another, you put the other thing on top.

    e.g. They had capped the roof with plywood.
           他们在房顶上加盖了胶合板。
    e.g. ...homemade scones capped with cream.
           涂有奶油的自制烤饼

10. 使具有…的结局;使…结束
      If someone says that a good or bad event caps a series of events, they mean it is the final event in the series, and the other events were also good or bad.

cap的反义词

      e.g. The unrest capped a weekend of right-wing attacks on foreigners.
             周末右翼分子对外国人的攻击最终演变成了这场骚乱。

11. 箍（牙）;给（牙齿）上牙套
      If someone's teeth are capped, covers are fixed over them so that they look better.

      e.g. He suddenly smiled, revealing teeth that had recently been capped...
             他突然笑了出来,露出了刚箍过的牙。
      e.g. I had my teeth capped.
             我戴了牙套。

12. (玩具枪用的)火药纸,电光纸
      A cap is a small amount of explosive that is wrapped in paper. Caps are often used in toy guns.

13. see also: ice cap

14. 谦卑地索要；毕恭毕敬地请求
      If you go cap in hand to someone, you ask them very humbly to give you something or to do something for you.

cap的近义词

      e.g. He has been given the unenviable task of going round, cap in hand, to various generous companies.
             他被分配了一个苦差，要点头哈腰地去拜访那些愿意掏钱资助的公司。