GLITCH

[noun] [C] - a small problem or fault that prevents something from being successful or working as well as it should(informal) We'd expected a few glitches, but everything's gone remarkably smoothly.(informal) The system was finally withdrawn from sale last week, having been plagued with glitches ever since its launch.(specialized) A glitch is also a sudden unexpected increase in electrical power, esp. one that causes a fault in an electronic system.The computer failure was due to a glitch caused by lightning.