Crossword Genius

Jersey's post collection (7)

Ross

I believe the answer is:

maillot

'jersey's' is the definition.
(I've seen this before)

'post collection' is the wordplay.
'post' becomes 'mail' (synonyms).
'collection' becomes 'lot' (lot is a kind of collection).
'mail'+'lot'='MAILLOT'

(Other definitions for maillot that I've seen before include "Top" , "Swimsuit" , "Jersey" , "Tights worn for ballet" .)

I've seen this clue in The Guardian.
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