Meaning of field captain

field' cap"tain

Pronunciation: [key]
— Sports. Sports.
  1. a member of a team taking active part in a game who is authorized to make decisions for the team, esp. in regard to planning plays, deciding whether to accept penalties called by an official against the opponents, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.