1. Taking part in a sport for pay but not on a full-time basis.
2. Composed of or engaged in by semiprofessional players.

1. A semiprofessional player.
2. One whose occupation or work has some of the characteristics of a profession or of a professional.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.