Crossword Genius

Crowd downcast with no action outside (5)

Ross

I believe the answer is:

press

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'crowd' is the definition.
(press is a kind of crowd)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for press that I've seen before include "needed to avoid crooked racket" , "flock" , "Smooth" , "Crush; iron" , "Produce record" .)

I've seen this clue in The Guardian.
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