Crossword Genius

Water pipe (4)

Ross

I believe the answer is:

main

'water pipe' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for main that I've seen before include "Principal or high seas" , "Chief in importance" , "Salt water" , "Chief, primary" , "Ocean or principal pipe" .)

I've seen this clue in The Guardian, the King Feature Syndicate, the Wall Street Journal, The Telegraph and the New York Times.
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