flyback

Meanings

1. The movement of the electron beam back to its initial position between scan lines in a cathode-ray tube display.
2. A special kind of electrical transformer, originally designed to generate high-voltage sawtooth signals at a relatively high frequency, and now extensively used in switched-mode power supplies.

1. Of a rabbit's fur: tending to spring back to its original position during stroking or brushing.

Etymology

From fly + back.