Promote a ball in Bellbird casually with only one pound (7)

I believe the answer is:

dribble

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'pound' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for dribble that I've seen before include "A small amount" , "Emit saliva through lips" , "Control football - fail to control saliva" , "Run with ball at feet" , "Trickle - repeatedly tap football forwards" .)

I've seen this clue in the Sydney Morning Herald.

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