Crossword Genius

Collection point circled by returning wrestlers in Japan (7)

Ross

I believe the answer is:

omnibus

I'm a little stuck... Click here to teach me more about this clue!

'collection' is the definition.
(I know that omnibus is a type of anthology)

'point circled by returning wrestlers in japan' is the wordplay.
I cannot quite understand how this works, but
'point' could be 'nib' (I've seen this in another clue) and 'nib' is found in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for omnibus that I've seen before include "Collection of writing" , "Book of collected works - vehicle" , "Bumper (volume, edition)" , "Volume containing several books" , "Multi-part edition" .)

I've seen this clue in The Daily Express.
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