When a baseball is hit with a bat, this is an example of a swat.
When you hit and crush a fly, this is an example of a time when you swat the fly.
Swatted a ball into the outfield.
Swatted at the mosquito.
Origin of swat
- Alteration of squat to squash (obsolete and dialectal)
From American Heritage Dictionary of the English Language, 5th Edition