Related Clues:

• Make an area a no-fly zone?
• Chase a fly, maybe
• Thwack like a fly
• Flatten, as a fly
• Special team underfire cops use to make hit
• (Hit with) a sharp blow
• Insect-hitting device
• Give a "whap!"
• Whack, as a mosquito
• Hit, like a fly
• Whack hard, as a baseball