pro
n. countable B2 Upper Intermediate US //ˈpɹoʊ// UK //pɹˈəʊ// pro
n. a person who is very good at their job or a specific activity because they have a lot of experience. It is a short way of saying professional.
n. a person who engages in a specific activity as a main occupation rather than as a pastime; a professional. Informal in register and often used to denote high proficiency.
She is a real pro at fixing computers.
After years of practice on the local circuit, he finally decided to turn pro and join the national league.
Even among seasoned veterans, her ability to remain calm under pressure marked her as a true pro who could handle any crisis.
Usage
Often used in the phrase 'a real pro' or 'turn pro'.