1
- a male child or youth男孩, 男青年。
1.1
- a person's son儿子：
she put her little boy to bed.
她把年幼的儿子放到床上。
1.2
- with modifier a male child or young man who does a specified job（做某项差使的）男孩（或男青年）：
a delivery boy.
男送货员。
2
- usu. with adj. a man, especially a young or relatively young one（尤指年轻或比较年轻的）男人：
the inspector was a local boy
检验员是一位当地小伙儿
I was the new boy at the office.
我是办公室新来的男孩。
2.1
boys
informal men who mix socially or who belong to a particular group, team, or profession〈非正式〉（指同属一个团队或有共同职业的）一群男人：he wants to stay one of the boys
他想留住这些男人中的一个
our boys have finished bombing.
我们的士兵们已经完成了轰炸任务。
2.2
- dated used as a friendly form of address from one man to another, often from an older man to a young man〈旧〉小伙子（男性之间的称呼, 通常是年长称呼年幼者）：
my dear boy, don't say another word!
小伙子, 什么都别说了！
2.3
- dated, offensive (often used as a form of address) a black male servant or worker〈旧, 冒犯〉（常用作白人对黑人仆役的称呼）男仆, 男佣; 侍者, 服务员。
2.4
- used as a form of address to a male dog［用作对公狗的称呼］伙计：
down boy, down!
下来, 伙计！
- informal used to express strong feelings, especially of excitement or admiration〈非正式〉［用于表示强烈的感情, 尤用于表示激动或赞赏］好家伙：
oh boy, that's wonderful!
好家伙, 太妙了！
短语
boys in blue
- informal policemen; the police〈非正式〉警察; 警方。
boys will be boys
- used to express the view that mischievous or childish behaviour is typical of boys or young men and should not cause surprise when it occurs孩子总是孩子嘛！（意为男孩子难免要淘气, 不足为怪）
the big boys
- men or organizations considered to be the most powerful and successful大人物（或大机构）。
派生词
boyhood
noun词源
Middle English (denoting a male servant)： of unknown origin.