Definition of "passenger pigeon" []

• An extinct migratory bird (Ectopistes migratorius) abundant in eastern North America until the latter part of the 19th century. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The last known passenger pigeon famed in the lore of extinctions under its own individual name, Martha survived until 1914 at the Cincinnati Zoo."
• "311 “The passenger pigeon needs no protection …” Quoted in Schorger 1955, p."