blip

Concise Oxford English Dictionary © 2008 Oxford University Press:
blip/blɪp/

▶noun

• 1 a bleep made by an electronic device.

  ■ a small flashing point of light on a radar screen representing an object.

• 2 an unexpected, minor, and usually temporary deviation from a trend: the company's success is a seasonal blip.

▶verb (blips, blipping, blipped)

• 1 (of an electronic device) make a blip.

• 2 open (the throttle of a motor vehicle) momentarily.

– origin C19 (denoting a sudden rap or tap): imitative.