Definition of "clincher" [clinch•er]

• One that clinches, as: (noun)
• A nail, screw, or bolt for clinching. (noun)
• A tool for clinching nails, screws, or bolts. (noun)
• Informal A point, fact, or remark that settles something conclusively; a decisive factor. (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.

• "In the field, third baseman Adrian Morales made solid plays in the title clincher, outfielders Whit Merrifield, Evan Marzilli and Jackie Bradley Jr. tracked down everything."
• "Can't wait to see Ryan score the title clincher v Stoke in front of the Stretford End the week before he flies of to Madrid for the final. this is a big big game so I don't think he should start straight from injury, off the bench maybe .... you know give him a run out when we're 4-0 up: p"
• "The lamb and chicken were as good as any cart in Midtown, and they had the requisite white and red sauces, but the real clincher is the fryer."