1. a person who rises at an early hour.
2. a person who arrives before others, as for the purpose of gaining some advantage: The early birds got the best seats for the play.
3. (caps.) Aerospace.the first of the Intelsat series of communications satellites, orbited (1965) by Intelsat.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.