Crossword Genius

One inclined to go in and out (4)

Ross

I believe the answer is:

ramp

(Other definitions for ramp that I've seen before include "what could be criminal offence" , "cheat" , "Slope - racket" , "Sloping surface; swindle" , "Sloping surface connecting two levels" .)

I've seen this clue in The New York Times.
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