Definitions:

1. A colloquial term for a remote control used to operate electronic devices, especially televisions. NOUN
   • Pass me the zapper; I want to change the channel.
2. A light gun used with some video game consoles designed to simulate shooting targets on the screen. NOUN
   • The arcade had several games that used zappers for an interactive shooting experience.
3. An electric device used to attract and kill insects by electrocution, typically using ultraviolet light to lure the bugs. NOUN
   • We put a zapper on the porch to keep the mosquitoes away.

Synonyms:

• arcade gun
• clicker
• electric insect killer
• game gun
• insect killer
• light gun
• remote control