They support the feet of bounders (5)

I believe the answer is:

heels

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'bounders' is the definition.
('heel' can be a synonym of 'bounder')

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for heels that I've seen before include "Parts of body; tilts" , "Take to them and run away" , "Dastardly types" , "Blackguards in shoes?" , "despicable people" .)

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

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