flashing >> ˈflaʃɪŋ
Definition: [adjective] shining in a bright but brief, sudden, or intermittent way.
Example: a police car with a flashing light
Definition: [noun] brief, sudden, and intermittent bursts of bright light.
Example: he was woken up by the police sirens and the flashing of lights
Definition: [noun] the action, especially of a man, of showing one's genitals briefly in public.
Example: when arrested and interviewed, he denied flashing