strobe

A stroboscopic lamp: a device used to produce regular flashes of light.

• White all light sources illuminate the subject, the strobe both illuminates and "freezes" the subject.

A pulse of light, such as from a flashing or rotating light source.

• "The strobe from the lighthouse came into the window and lit up the wall behind my crib."
• From somewhere behind him came a strobe of light, then he heard a car door slam.

An electronic signal in hardware indicating that a value is ready to be read.

• a memory strobe; a data strobe

To flash like a stroboscopic lamp.

• ... as they fuck she quakes, body strobing miles beneath him in cream and night-blue, all sound suppressed, eyes in crescents behind gold lashes...
• Here was a blazingly erotic sex star par excellence as Travolta gyrated around that strobing disco dance floor like a cock-o'-the-walk.