Crossword Genius

Crowd ended exercise (5-2)

Ross

I believe the answer is:

press-up

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'exercise' is the definition.
(I know that press-up is a type of arm exercise)

'crowd ended' is the wordplay.
'crowd' becomes 'press' (to press can mean to crowd around).
'ended' becomes 'up' (I can't explain this - if you can you should give a lot more credence to this answer).
'press'+'up'='PRESS-UP'

Can you help me to learn more?

(Other definitions for press-up that I've seen before include "Keep-fit exercise" , "Face-to-the-floor exercise" , "Arm exercise while lying face down" , "Gymnastic floor exercise" , "Form of arm exercise" .)

I've seen this clue in The Guardian.
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