wwvusa
Member
- Joined
- Dec 23, 2011
- Member Type
- Retired Academic
- Native Language
- English
- Home Country
- United States
- Current Location
- United States
Why do we use "flat" to mean "exactly" or "and no more", as in "He finished the race in 4 minutes flat" or "I'll be there in nothing flat"? What is "flat" about an exact time span?