1specialized; dedicated (to a particular field or purpose)
2specially; specifically (for a particular purpose)
3(of institutions, personnel etc) designated or assigned for a specific task; special
Examples
zhè这shì是yì一jiā家zhuān mén专门wèi为xué sheng学生tí gōng提供fú wù服务de的shāng diàn商店。
这是一家专门为学生提供服务的商店。
This is a store that caters specially to students.
市政府想建设专门的自行车道。但是，很多司机反对这个主意。
The city government wants to set up special cycle lanes. However, a lot of drivers oppose the idea.
这张书桌是专门为儿童设计的。
This desk is designed for children.