dash someone's hopes
Destroy someone's plans, disappoint or disillusion. For example, That fall dashed her hopes of a gold medal. This term uses dash in the sense of “destroy,” a usage surviving only in this idiom. [Second half of 1500s]
What Are En Dashes?You don’t hear as much about them as other dashes, but you’ve most likely seen them around. En dashes (–) can denote a range or connect the endpoints of a route. They can also show a contrast or connection between two words. You can use them to replace the words to, and, or versus. An en dash is longer than a hyphen (–) and shorter …
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.