Discuss speed on a cycle (3,6)

I believe the answer is:

bat around

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'discuss' is the definition.
Both the definition and answer are verbs in their base form.
Perhaps they are linked in a way I don't understand?

'speed on a cycle' is the wordplay.
'speed' becomes 'bat' (I can't justify this - if you can you should believe this answer much more).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'cycle' becomes 'round' (going round once).
'bat'+'a'+'round'='BAT AROUND'

Can you help me to learn more?

I've seen this clue in The Times.

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