Adverb
At maximum capability, intensity, or speed.
Usage- Australia
- idiomatic
- not-comparable
- Examples
-
We had the car going flat strap down the highway when the cops pulled us over.
Adjective
Extremely busy.
Usage- Australia
- idiomatic
- not-comparable
- Examples
-
Can you call me back tomorrow, mate? I′m flat strap at the moment.