Crossword Genius

One turn of an engine, in short (3)

Ross

I believe the answer is:

rev

(Other definitions for rev that I've seen before include "Speed up engine (colloq.)" , "One turn of an engine, in short" , "Accelerate (abbrev.)" , "Increase speed of (an engine)" , "Reverend (abbr.)" .)

I've seen this clue in the Irish Times (Simplex) and The Irish Times.
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