To debug means to find and fix problems in computer code or other systems. When programmers write software, tiny mistakes called bugs can make programs crash, freeze, or do the wrong thing. Debugging is the detective work of tracking down these errors and correcting them.

Debugging requires patience and careful thinking. A programmer might test their code repeatedly, checking each line to see where things go wrong. They might use special debugging tools that show exactly what the program is doing step by step, like watching a movie in slow motion to spot a mistake.

The word has expanded beyond computers. An engineer might debug a robot that won't move correctly, or a sound technician might debug a microphone system that produces static. Whenever you're systematically hunting down what's causing something to malfunction, you're debugging. The process teaches persistence: complex programs might have dozens of bugs, and finding each one requires determination and logical thinking.