Definitionen
1.NounA person who belongs to a profession.
2.NounA person who earns their living from a specified activity.
3.NounA prostitute."There was this nice lady who flirted with me at the bar, but it turned out that she was a professional."
4.NounA reputation known by name.
5.NounAn expert.
6.NounOne of four categories of sociologist propounded by Horowitz: a sociologist who is actively concerned with promoting the profession of sociology.
7.AdjectiveOf, pertaining to, or in accordance with the (usually high) standards of a profession.
8.AdjectiveThat is carried out for money, especially as a livelihood.
9.AdjectiveExpert.