1. To remove a hidden electronic device; such as, a microphone, from a place: The technician was assigned to debug the conference room for any listening devices.
2. To make a hidden microphone ineffective.
3. To search for and to eliminate any malfunctioning elements or errors in an operating system: The engineers had to debug the spacecraft before it could launch.

The company's computer technician was debugging a program which was being used by employees.

4. To remove insects from a room or other places: The hotel had specialists debugging the beds of bedbugs with pesticides before the arrival of new customers.