Definition of "sing-along" [sing-along]

• A casual gathering for group singing; a songfest. (noun)
• A spontaneous group singing, as by an audience at a performance. (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 first event in June raised $304 for Equality Now, so bring your evil laugh back to the heart of Salem for a night of sing-along fun for a good cause!"
• "Bring your evil laugh back to the heart of Salem for one last night of sing-along fun for a good cause!"
• "So bring your evil laugh back to Cambridge for a night of sing-along fun for a good cause!"