sev·enth-inn·ing stretch (s?v??nth-?n??ng)n. The point in a baseball game between the top and bottom of the seventh inning, when fans by tradition stand up and stretch their legs.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.