Crossword Genius

Those wandering around county town for trainer (6,4)

Ross

I believe the answer is:

tennis shoe

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

'trainer' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'those wandering around county town' is the wordplay.
'wandering' indicates anagramming the letters.
'around' indicates putting letters inside.
'county town' becomes 'ennis' (I've seen this before).
'those' is an anagram of 'tshoe'.
'tshoe' going around 'ennis' is 'TENNIS-SHOE'.

'for' is the link.

Can you help me to learn more?

(Other definitions for tennis shoe that I've seen before include "item of footwear" , "court wear" , "Sports footwear" , "trainer?" , "sporting gear" .)

I've seen this clue in The Guardian.
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