A seat in the market? (5)

I believe the answer is:

stall

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'a seat' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for stall that I've seen before include "Temporise; sales booth" , "Stable compartment" , "Canon's seat" , "(Of engine) stop running; booth" , "Box" .)

I've seen this clue in the Evening Standard.

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