1. noun /ˈamətjʊə,ˈamətə,ˈæ.mə.tʊəɹ,ˈæmətʃɚ/
a) A lover something.
he conducted extensive correspondence on wines with European suppliers, employing a wine vocabulary familiar to any modern amateur of wines.
b) A person attached to a particular pursuit, study, or science as to music or painting; especially one who cultivates any study or art, from taste or attachment, without pursuing it professionally.
She is an accomplished amateur woodworker.
2. adjective /ˈamətjʊə,ˈamətə,ˈæ.mə.tʊəɹ,ˈæmətʃɚ/
a) Non-professional.
amateur sports
b) Created, done, or populated by amateurs or non-professionals.
Duct tape is a sure sign of amateur workmanship.
Wikipedia foundation.