Dictionary.net

1. A variety of "power glitch" (see glitch); momentary zerovoltage on the electrical mains.2. Missing characters in typed input due to softwaremalfunction or system overload (one cause of such behaviourunder Unix when a bad connection to a modem swamps theprocessor with spurious character interrupts; see screamingtty).3. Mental glitches; used as a way of describing thoseoccasions when the mind just seems to shut down for a coupleof beats. See glitch, fried.