Crossword Genius

One used for skipping or doing somersault at gym (4)

Ross

I believe the answer is:

rope

'one used for skipping' is the definition.
(skipping rope)

'or doing somersault at gym' is the wordplay.
'doing somersault' says the letters should be written in reverse (in a down clue, letters flip up).
'at' says to put letters next to each other.
'gym' becomes 'pe' (short for Physical Education).
'or' in reverse letter order is 'ro'.
'ro'+'pe'='ROPE'

(Other definitions for rope that I've seen before include "Lasso?" , "Enough to hang one?" , "Stranded fastener" , "A thick strong cord" , "Noose" .)

I've seen this clue in The Times.
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