Crossword Genius

Adult fat in every direction (6)

Ross

I believe the answer is:

around

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

'fat in every direction' is the definition.
Both the definition and answer are adjectives. Maybe you can see an association between them that I can't see?

'adult' is the wordplay.
I cannot really see how this works, but
'adult' could be 'a' (abbreviation) and 'a' is found within the answer.
The remaining letters 'round' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for around that I've seen before include "Close to" , "On every side" , "About, here and there in circular way?" , "On all sides or near" , "Somewhere in the vicinity" .)

I've seen this clue in The Sun.
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