Wonderful gymnast calling for silence (5)
I believe the answer is:
peace
'silence' is the definition.
(I've seen this in another clue)
'wonderful gymnast' is the wordplay.
I cannot really understand how this works, but
'wonderful' could be 'ace' (ace can informally mean very good) and 'ace' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'calling for' acts as a link.
Can you help me to learn more?
(Other definitions for peace that I've seen before include "Freedom from disturbance, tranquillity" , "See 1" , "A Christmas wish" , "Quiet companion" , "Repose, tranquillity" .)