video noise; snow
Refers to the random static or 'snow' seen on a video screen when there is no signal or poor reception. A wasei-eigo term derived from English 'snow noise'.
wasei-eigo (Japanese-coined English), from snow noise
When I turned on the old TV, snow noise filled the screen.
Variant with interpunct; less common but still seen.
Wasei-eigo from English 'snow noise', referring to video static resembling falling snow.