1. 兄弟情谊;友爱;互助
Fraternity refers to friendship and support between people who feel they are closely linked to each other.

2. 同业者;具有相同职业(或兴趣)的人
You can refer to people who have the same profession or the same interests as a particular fraternity .

3. (美国男大学生)联谊会，兄弟会
In the United States, a fraternity is a society of male university or college students.

1. people engaged in a particular occupation

e.g. the medical fraternity

Synonym: brotherhoodsodality

2. a social club for male undergraduates

Synonym: frat