A diminutive Australian bounder (3)

I believe the answer is:

roo

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This might be a double definition.

'a diminutive australian' is the first definition.
'roo' can be an answer for 'australian' (short for kangaroo - Australian animal). I am not sure about the 'a diminutive' bit.

'bounder' is the second definition.
(short for kangaroo, something which bounds)

Can you help me to learn more?

(Other definitions for roo that I've seen before include "Hopper" , "Kanga's son (Pooh)" , "companion of Pooh" , "short jumper" , "Jumping marsupial" .)

I've seen this clue in the Evening Standard.

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