Crossword Genius

Delivery pouch in a manila envelope (8)

Ross

I believe the answer is:

chinaman

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

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

'pouch in a manila envelope' is the wordplay.
'CHINAMAN' is hidden within the letters.
But, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for chinaman that I've seen before include "Type of cricket delivery" , "Oriental - cricket delivery from off to leg from a left-hander to a right-hander" , "special ball" .)

I've seen this clue in The Hindu.
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