Crossword Genius

Something to put on athlete's foot? (5,4)

Ross

I believe the answer is:

track shoe

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

'on athlete's foot?' is the definition.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for track shoe that I've seen before include "Trainer" , "One of a pair of spikes" .)

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