Definition of "lead-in" []

• Opening or introductory matter: The joke served as a lead-in to a discussion of more serious matters. (noun)
• A program, as on television, scheduled to precede another. (noun)
• The wire that connects an outdoor antenna to an electronic transmitter or receiver. (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.

• "Our tipster also sent along this teaser video, described as a "lead-in" to the Super Bowl ad, which features what might be a new catchphrase -- "We just got Samsung-ed!""
• "February 20th, 2010 at 12: 11 am brian, your lead-in example of good food was belgian ale."
• "Men is unlike anything else on TNT, and needed a more powerful lead-in than the puerile Franklin & Bash to sell it to a mainstream audience."