Definition of "standing room" [standing room]

• Space in which to stand, as in a public place where all seats are filled. (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.

• "Huge lorries with standing room only in their open backs trundled past, flouring the meat with dust."
• "Karla Kelly’s courtroom filled up as fast as a Michael Jackson concert, standing room only."