Crossword Genius

Winger joking about training exercises? (5)

Ross

I believe the answer is:

pewit

I'm a little stuck... Click here to teach me more about this clue!

'winger' is the definition.
(pewit is a kind of bird)

'joking about training exercises?' is the wordplay.
I cannot quite understand how this works, but
'training' could be 'pe' (Physical Education) and 'pe' is found in the answer.
The remaining letters 'wit' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for pewit that I've seen before include "Lapwing" , "Bird" .)

I've seen this clue in The Times.
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