Territory ball? (6)

I believe the answer is:

sphere

I believe this is a double definition.

'territory' is the first definition.
(I know that territory can be written as sphere)

'ball?' is the second definition.
(ball is a kind of sphere)

(Other definitions for sphere that I've seen before include "Globe or ball" , "Area of activity" , "Perfectly round solid geometric figure" , "Territory" , "Perfect round" .)

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

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