Learn how to say Sough correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word sough:
(of the wind in trees, the sea, etc.) make a moaning, whistling, or rushing sound:
(as noun soughing)
the soughing of the wind in the canopy of branches
a moaning, whistling, or rushing sound as made by the wind in the trees or the sea.
Old English swōgan, of Germanic origin