Our ball thrown round (7)

I believe the answer is:

lobular

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'round' is the definition.
Although both the answer and definition are adjectives, I cannot see how one could define the other.

'our ball thrown' is the wordplay.
'thrown' indicates an anagram.
'our'+'ball'='ourball'
'ourball' is an anagram of 'LOBULAR'.

Can you help me to learn more?

I've seen this clue in The Hindu.

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