1 a: of, relating to, or characteristic of a profession
b: engaged in one of the learned professions
c(1): characterized by or conforming to the technical or ethical standards of a profession
(2): exhibiting a courteous, conscientious, and generally businesslike manner in the workplace
2 a: participating for gain or livelihood in an activity or field of endeavor often engaged in by amateursa professional golfer
b: having a particular profession as a permanent career as a professional soldier
c: engaged in by persons receiving financial returnprofessional football