/ blɪp; NAmE / noun
1.
a bright light flashing on the screen of a piece of equipment, sometimes with a short high sound
2.
a change in a process or situation, usually when it gets worse for a short time before it gets better; a temporary problem :
a temporary blip
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WORD ORIGIN
late 19th cent. (denoting a sudden rap or tap): imitative; the noun sense unexpected deviation dates from the 1970s.