Crossword Genius

A peaceful smoke (4)

Ross

I believe the answer is:

pipe

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

'a peaceful smoke' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?

This is all the clue.

Can you help me to learn more?

(Other definitions for pipe that I've seen before include "Tube; wind instrument" , "chanter" , "'Tube for water or gas, say (4)'" , "Tube for conveying gas or liquid" , "Whistle" .)

I've seen this clue in the Evening Standard.
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