(1) 朋友，友人(person who one knows and likes very much，but who is not a relation) [C]：good/great/bosom～好/真正的/知心的朋友;boy/girl～男/女朋友;an old～of the family 世交;She was never a～. 她从来就不是朋友。〖反〗enemy;

(2) 赞助(支持，同情)者，助手(person who helps or supports sb/sth) [C] [N(of /to)] ：a～of justice/peace维持正义/和平的人;a～of the poor/arts/Bristol Hospice穷人/艺术/布斯托救济院的资助人;a list of～s of the museum/Boston Symphony博物馆/波士顿交响乐团的赞助者名单;be a good～to everyone/animals保护每个人/动物;be a good～to all good causes支持所有有益的事业;〖同〗supporter;〖反〗opponent;

(3) 拥护者，盟友(person who is on good terms with another;one not hostile) [C]：a～of conservationists自然资源保护论者的拥护者;count on one's～s to support the legislation 依靠自己的拥护者来支持立法;among～s 在盟友当中;〖反〗rival，competitor;

(4) 有帮助的事物(品质)(helpful or useful thing，quality) [C] (fig)：Her radio was a good～while she was living alone. 她独居时，收音机对她最有帮助。Use your old～，the microscope. 使用有助于你的老搭档——那台显微镜。

(5) 常来而又不知名的人(stranger noticed for some reason，usu with amusement or displeasure) [C]：Our～from next door is listening to his music again. 隔壁的那个家伙又在听音乐了。

(6) (称呼语)朋友(person one is addressing，esp in a speech in public) [C](fml)：my learned/honourable～我的博学的朋友 (英国法院律师间的称呼)/我的尊贵的朋友(英国下议院议员间的称呼);F～s，I'll introduce... 朋友们，我来介绍一下……

be/make friends (with sb) 做(交)朋友;结成友谊;和……和好：be～s with sb again与某人重归于好;make～s with a dog与狗交朋友;A～in need is a～in deed. (prov)患难见真情。

→′friendless adj 没有朋友的;′friendship n 友爱(谊);

【辨异】 friend与acquaintance、associate和companion的区别见ACQUAINTANCE。