[semi.pro.fes.sion.al] n (1897): one who engages in an activity (as a sport) semiprofessionally
[2]semiprofessional adj (1900) 1: engaging in an activity for pay or gain but not as a full-time occupation
2: engaged in by semiprofessional players "~ baseball" -- semi.pro.fes.sion.al.ly adv