Bar, the BrE AmE noun
1 . British English the profession of being a ↑ barrister , or the members of this profession:
He retired after 25 years at the Bar.
2 . American English the profession of being a lawyer, or the members of this profession:
the State Bar of California
3 . American English informal the exam that you must take to become a lawyer
4 . be called to the Bar British English to become a barrister