Coach's sports shoe (7)

I believe the answer is:

trainer

I believe this clue is a double definition.

'coach's' is the first definition.
(thesaurus)

'sports shoe' is the second definition.
(I've seen this before)

(Other definitions for trainer that I've seen before include "Casual 11 ac" , "Sports footwear" , "Coach - item of footwear" , "The odd thing an athlete may leave behind" , "Sports shoe" .)

I've seen this clue in The Telegraph and The Times.

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